401565
domain: N
Appears in sequences
- Number of lower triangles of an n X n -5..5 array with all row and column sums zero.at n=4A195519
- T(n,k) = Number of lower triangles of an n X n -k..k array with all row and column sums zero.at n=40A195522
- Number of lower triangles of a 5 X 5 -n..n array with all row and column sums zero.at n=4A195523