85261

Appears in sequences

• Expansion of 1/((1+x)*(1-x)^5).at n=42A001752
• a(n) = n*(n + 1)*(2*n^2 + 2*n - 1)/6.at n=21A006324
• Numbers k such that sigma(k) and sigma(k+1) are nontrivial powers (A065496).at n=20A065522
• G.f. 1/(1-sum(n=1,N,x^(n*(3*n-1)/2))).at n=41A181324
• Number of integers in n-th generation of tree T(2^(-1/3)) defined in Comments.at n=47A274158