55352

Appears in sequences

• a(0)=1; a(n) = sigma_1(n) + sigma_3(n).at n=36A092345
• Principal diagonal of the convolution array A213844.at n=21A213845
• Numbers n such that a positive number m < n exists such that n-m, n+m, and n*m are oblong numbers (A002378).at n=9A224954