Number of lower triangles of an n X n integer array with all row and column sums zero and all row and column sums of squares <=8.
A195886
Number of lower triangles of an n X n integer array with all row and column sums zero and all row and column sums of squares <=8.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =65a(4) =1349a(5) =90013a(6) =17612909a(7) =7690681987
External references
- oeis: A195886