135425
domain: N
Appears in sequences
- a(n) = Sum_{ d divides n } (n/d)^(2d).at n=15A073705
- Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, -1, 1), (-1, 0, -1), (0, -1, 0), (1, 1, 0)}.at n=11A149083
- Expansion of Sum_{k>=1} k^2 * x^(2*k) / (1 - k * x^k).at n=31A326121