pentagonal numbers: answer
pentagonal numbers: answer


smileytechguy/sample_projects,smileytechguy/sample_projects,smileytechguy/sample_projects,smileytechguy/sample_projects,smileytechguy/sample_projects,smileytechguy/sample_projects,smileytechguy/sample_projects,smileytechguy/sample_projects,smileytechguy/sample_projects