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.

A248744 Number of different ways one can attack all squares on an n X n chessboard with n rooks.

Table of values

n a(n)
0 1
1 1
2 6
3 48
4 488
5 6130
6 92592
7 1642046
8 33514112
9 774478098
10 19996371200
11 570583424422
12 17831721894912
13 605743986163706
14 22223926472824832
15 875786473087350750
16 36893467224629215232
17 1654480168085245432354
18 78692809748219369422848
19 3956839189675526769415958

List of values

[1, 1, 6, 48, 488, 6130, 92592, 1642046, 33514112, 774478098, 19996371200, 570583424422, 17831721894912, 605743986163706, 22223926472824832, 875786473087350750, 36893467224629215232, 1654480168085245432354, 78692809748219369422848, 3956839189675526769415958]

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

Content is available under The OEIS End-User License Agreement.