127960
domain: N
Appears in sequences
- Stella octangula numbers: a(n) = n*(2*n^2 - 1).at n=40A007588
- a(n) = 8000*n - 40.at n=15A157660
- Number of ways to place 5 nonattacking wazirs on an n X n board.at n=5A172228
- Number of 2 X n 0..3 arrays with antidiagonals unimodal and rows and diagonals nondecreasing.at n=12A223962
- Triangle read by rows: T(n,k) = number of n X n binary matrices with k pairwise nonadjacent 1's, n >= 0, k = 0..n^2.at n=66A232833
- Convolution of nonzero heptagonal numbers (A000566) with themselves.at n=13A272103