174174
domain: N
Appears in sequences
- Number of n-step mappings with 4 inputs.at n=39A005945
- a(n) = (2*n+1)*(3*n+1)*(4*n+1).at n=19A033591
- Numbers k such that k, 2*k and 4*k are balanced numbers (A020492).at n=28A076376
- Numbers n such that sigma(n) = 12*phi(n).at n=18A104902
- Triangle read by rows: T(n,k) is the number of permutations of {1,2,...,n} having genus k (see first comment for definition of genus).at n=38A177267
- Expansion of Product_{k>=1} (1 + x^k)^(k*(3*k-2)).at n=11A294838
- Number of permutations of [n] in which the length of every increasing run is 0 or 1 (mod 6).at n=13A322262