Number of ways to place k non-attacking semi-knights on an n x n chessboard, sum over all k>=0.
A182562
Number of ways to place k non-attacking semi-knights on an n x n chessboard, sum over all k>=0.
Terms
- a(0) =2a(1) =16a(2) =288a(3) =11664a(4) =1458000a(5) =506250000a(6) =414720000000
External references
- oeis: A182562