In how many ways can a number be expressed as a sum of consecutive numbers?
105985
Prove that all even integers $n \neq 2^k$ are expressible as a sum of consecutive positive integers
87345
How many ways so that $x+y+z\leq n$?
64052
Among any three consecutive positive integers one is a multiple of 3
42795
Number of bit strings with 3 consecutive zeros or 4 consecutive 1s
136933
Which $n$ can be expressed as $x^2 − y^2$?
23427
How to prove there are no more positive integers that are products of 2 and 3 consecutive numbers?
152113
Formula to this pattern? $1$, $11$, $21$, $1211$, $111221$, $\ldots$
108497
Can $2^n$ and $2^{n+1}$ have the same digit sum?
35648
How many permutations of the set n={1,2,3,3,3,4,4,5} are possible without any consecutive identical elements?
142978
combinatorics: sum of product of integer compositions
122891
integer as sum of three binomials
139863
There exists more than one set of numbers $(m,n)$ so that $132m+34n=\gcd(132,34)$?
153769
Numbers that can be expressed as the sum of two cubes in exactly two different ways
62120
Limit of the ratio of consecutive Fibonacci numbers
157280
How do I sum up specific things in Numbers?
4194
Which integers can be expressed as a sum of squares of two coprime integers?
156242
As many even numbers as natural numbers.