Number of solutions to the Xqueens problem on a 2n X 2n board that are both sparse and paired.
A350614
Number of solutions to the Xqueens problem on a 2n X 2n board that are both sparse and paired.
Terms
- a(0) =0a(1) =140a(2) =317544a(3) =54472800228
External references
- oeis: A350614