Number of ways to place k nonattacking bishops on an n X n board, sum over all k>=0.
A201862
Number of ways to place k nonattacking bishops on an n X n board, sum over all k>=0.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =70a(4) =729a(5) =9918a(6) =167281a(7) =3423362a(8) =82609921a(9) =2319730026a(10) =74500064809
External references
- oeis: A201862