Improve docstring of harmonic numbers and cross refs between numbers in general
Improve docstring of harmonic numbers and cross refs between numbers in general

pbrady/sympy,iamutkarshtiwari/sympy,sunny94/temp,wanglongqi/sympy,hargup/sympy,meghana1995/sympy,meghana1995/sympy,kaichogami/sympy,jamesblunt/sympy,kmacinnis/sympy,souravsingh/sympy,drufat/sympy,ChristinaZografou/sympy,asm666/sympy,jbbskinny/sympy,sahilshekhawat/sympy,abhiii5459/sympy,oliverlee/sympy,Arafatk/sympy,Arafatk/sympy,shikil/sympy,farhaanbukhsh/sympy,jaimahajan1997/sympy,skirpichev/omg,lidavidm/sympy,liangjiaxing/sympy,rahuldan/sympy,Sumith1896/sympy,hrashk/sympy,Mitchkoens/sympy,kevalds51/sympy,lidavidm/sympy,Shaswat27/sympy,amitjamadagni/sympy,chaffra/sympy,AkademieOlympia/sympy,yashsharan/sympy,ga7g08/sympy,bukzor/sympy,kaushik94/sympy,wyom/sympy,hrashk/sympy,madan96/sympy,skidzo/sympy,ChristinaZografou/sympy,dqnykamp/sympy,lindsayad/sympy,emon10005/sympy,AunShiLord/sympy,Curious72/sympy,Designist/sympy,Gadal/sympy,emon10005/sympy,bukzor/sympy,drufat/sympy,Titan-C/sympy,toolforger/sympy,mcdaniel67/sympy,jerli/sympy,saurabhjn76/sympy,ga7g08/sympy,amitjamadagni/sympy,meghana1995/sympy,bukzor/sympy,VaibhavAgarwalVA/sympy,hargup/sympy,yukoba/sympy,liangjiaxing/sympy,Vishluck/sympy,kaichogami/sympy,AunShiLord/sympy,abloomston/sympy,jaimahajan1997/sympy,pbrady/sympy,kaichogami/sympy,sampadsaha5/sympy,mafiya69/sympy,saurabhjn76/sympy,MridulS/sympy,toolforger/sympy,Sumith1896/sympy,cccfran/sympy,kumarkrishna/sympy,grevutiu-gabriel/sympy,ChristinaZografou/sympy,dqnykamp/sympy,ahhda/sympy,madan96/sympy,yashsharan/sympy,sunny94/temp,grevutiu-gabriel/sympy,sunny94/temp,lidavidm/sympy,debugger22/sympy,grevutiu-gabriel/sympy,maniteja123/sympy,Vishluck/sympy,hargup/sympy,sahmed95/sympy,shipci/sympy,skidzo/sympy,postvakje/sympy,sahilshekhawat/sympy,kumarkrishna/sympy,garvitr/sympy,farhaanbukhsh/sympy,sampadsaha5/sympy,AkademieOlympia/sympy,mcdaniel67/sympy,VaibhavAgarwalVA/sympy,Davidjohnwilson/sympy,abloomston/sympy,souravsingh/sympy,Titan-C/sympy,jerli/sympy,madan96/sympy,mafiya69/sympy,sahmed95/sympy,kevalds51/sympy,wyom/sympy,Sumith1896/sympy,ahhda/sympy,atreyv/sympy,toolforger/sympy,farhaanbukhsh/sympy,MechCoder/sympy,jbbskinny/sympy,MridulS/sympy,yukoba/sympy,chaffra/sympy,garvitr/sympy,aktech/sympy,cswiercz/sympy,wyom/sympy,Shaswat27/sympy,iamutkarshtiwari/sympy,AunShiLord/sympy,aktech/sympy,Curious72/sympy,Designist/sympy,asm666/sympy,shikil/sympy,postvakje/sympy,shipci/sympy,iamutkarshtiwari/sympy,diofant/diofant,Vishluck/sympy,atreyv/sympy,ahhda/sympy,saurabhjn76/sympy,mcdaniel67/sympy,rahuldan/sympy,Mitchkoens/sympy,wanglongqi/sympy,pandeyadarsh/sympy,beni55/sympy,Curious72/sympy,cswiercz/sympy,atsao72/sympy,Designist/sympy,dqnykamp/sympy,kmacinnis/sympy,kaushik94/sympy,cswiercz/sympy,jaimahajan1997/sympy,mafiya69/sympy,Gadal/sympy,sahmed95/sympy,vipulroxx/sympy,vipulroxx/sympy,wanglongqi/sympy,kevalds51/sympy,moble/sympy,sahilshekhawat/sympy,Titan-C/sympy,atsao72/sympy,souravsingh/sympy,drufat/sympy,oliverlee/sympy,MechCoder/sympy,MechCoder/sympy,pbrady/sympy,pandeyadarsh/sympy,beni55/sympy,pandeyadarsh/sympy,VaibhavAgarwalVA/sympy,yashsharan/sympy,maniteja123/sympy,jamesblunt/sympy,ga7g08/sympy,beni55/sympy,Mitchkoens/sympy,moble/sympy,asm666/sympy,postvakje/sympy,Davidjohnwilson/sympy,Davidjohnwilson/sympy,Shaswat27/sympy,MridulS/sympy,cccfran/sympy,Arafatk/sympy,jbbskinny/sympy,Gadal/sympy,abhiii5459/sympy,rahuldan/sympy,oliverlee/sympy,aktech/sympy,lindsayad/sympy,atreyv/sympy,jamesblunt/sympy,yukoba/sympy,atsao72/sympy,liangjiaxing/sympy,emon10005/sympy,maniteja123/sympy,skidzo/sympy,kmacinnis/sympy,cccfran/sympy,debugger22/sympy,shipci/sympy,garvitr/sympy,vipulroxx/sympy,kaushik94/sympy,abloomston/sympy,shikil/sympy,AkademieOlympia/sympy,hrashk/sympy,abhiii5459/sympy,kumarkrishna/sympy,debugger22/sympy,jerli/sympy,lindsayad/sympy,sampadsaha5/sympy,moble/sympy,chaffra/sympy