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.

A143870 Number of ways of placing kings with no more than 1 mutual attack on an n X n chessboard.

Table of values

n a(n)
0 1
1 2
2 11
3 91
4 1462
5 38483
6 1755113
7 140404442
8 19400886875
9 4764856837927
10 2050537030592506
11 1572046460892726633
12 2133798146501117397613
13 5167591018292995062973870
14 22288638410038000574365307819
15 171813750317653145879779979300275
16 2366759768251260378737273078723819964

List of values

[1, 2, 11, 91, 1462, 38483, 1755113, 140404442, 19400886875, 4764856837927, 2050537030592506, 1572046460892726633, 2133798146501117397613, 5167591018292995062973870, 22288638410038000574365307819, 171813750317653145879779979300275, 2366759768251260378737273078723819964]

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

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