A054502 Counting sequence for classification of nonattacking queens on n X n toroidal board.

1, 1, 1, 2, 1, 2, 3, 5, 1, 3, 23, 30, 40, 4, 132, 218, 5, 1859, 29517, 1, 2, 9, 18, 51, 470, 7170, 387830, 1, 6, 1215, 121487, 89997968

Offset: 1

Author

Matthias Engelhardt

Keywords

• nonn
• nice
• hard

Crossrefs

See comments and references for A054500.

Cf. A054500, A054501, A053994, A007705, A006841.

Extensions

More terms from Matthias Engelhardt, Jan 11 2001