Number of non-attacking placements of 6 rooks on an n X n board.
A179061
Number of non-attacking placements of 6 rooks on an n X n board.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =720a(6) =35280a(7) =564480a(8) =5080320a(9) =31752000a(10) =153679680a(11) =614718720a(12) =2120152320a(13) =6492966480a(14) =18036018000a(15) =46172206080a(16) =110279070720a(17) =248127909120a(18) =530024705280
External references
- oeis: A179061