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 <=98.
A195891
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 <=98.
Terms
- a(0) =1a(1) =1a(2) =15a(3) =1695a(4) =1686561a(5) =15120998539
External references
- oeis: A195891