cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A292080 Number of nonequivalent ways to place n non-attacking rooks on an n X n board with no rook on 2 main diagonals up to rotations and reflections of the board.

Table of values

n a(n)
0 1
1 0
2 0
3 0
4 2
5 2
6 14
7 84
8 630
9 6096
10 55336
11 672160
12 7409300
13 104999520
14 1366363752
15 22068387264
16 331233939624
17 6005919062528
18 102144359744192
19 2054811316442112
20 39053339674065360
21 863259240785840640
22 18132529836143846560
23 436899062862222484480

List of values

[1, 0, 0, 0, 2, 2, 14, 84, 630, 6096, 55336, 672160, 7409300, 104999520, 1366363752, 22068387264, 331233939624, 6005919062528, 102144359744192, 2054811316442112, 39053339674065360, 863259240785840640, 18132529836143846560, 436899062862222484480]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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