21654
domain: N
Appears in sequences
- a(n) = (2*n^3 + 5*n^2 + 11*n)/2.at n=26A162263
- Coefficients of mock modular form H_1^(7) of type 1A.at n=29A256056
- p-INVERT of (1,0,1,0,0,0,0,...), where p(S) = (1 - S)(1 - S^2).at n=21A291740
- Number of integer partitions of n that reduce to 2, meaning their Heinz number maps to 2 under A304464.at n=37A319153
- Number of integer partitions of n with omicron 2.at n=38A325267
- G.f. A(x) satisfies: A(x) = Sum_{n>=0} x^n / (1 - x^(n+1)*A(x)).at n=9A340329
- Numbers k such that A307437(k) is divisible by 3.at n=39A342037
- Expansion of 1/(1 - x*(1+x)^2)^2.at n=11A362126