236808
domain: N
Appears in sequences
- Rook polynomials.at n=9A005778
- a(n) = (n-1)(n-4)(n-9)...(n-k^2) where k^2 < n <= (k+1)^2.at n=26A080500
- Triangle read by rows: coefficients of rook polynomials.at n=75A259985
- The least totient number k with exactly n solutions to the equation phi(x) = k, where all the solutions are nontotient numbers (A007617).at n=30A378510