A350611 Number of solutions to the Xqueens problem on an n X n board.

1, 6, 132, 20742, 5834838, 4198336824

Offset

1,2

Links

Table of n, a(n) for n=1..6.

Don Knuth, Xqueens and Xqueenons, 2021.

Crossrefs

Cf. A350612-A350614.

Sequence in context: A132872 A152289 A015503 * A247012 A003373 A129047

Adjacent sequences: A350608 A350609 A350610 * A350612 A350613 A350614

Keyword

nonn,more

Author

Don Knuth, Jan 16 2022

Status

approved