157344
domain: N
Appears in sequences
- q(n) = sigma(n) - n, where q(n) = n + e(n) + e(n-e(n)) and e(n) = n - eulerphi(n).at n=2A063935
- 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, 1), (-1, 0, 1), (0, 0, -1), (0, 1, 0), (1, 1, 1)}.at n=9A150598
- Coefficients of mock modular form H_1^(3).at n=15A256049
- Number of integer points (x, y, z, w) at distance <= 1/2 from 3-sphere of radius n.at n=20A350740