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.

A182333 Number of arrangements of n bishops such that every square of the board is controlled by at least one bishop.

Table of values

n a(n)
1 1
2 4
3 6
4 25
5 104
6 484
7 2136
8 11664
9 71136
10 451584
11 3006720
12 21902400
13 176774400
14 1456185600
15 12758860800
16 117456998400
17 1181072793600
18 12023694950400
19 130072449024000
20 1451792885760000
21 17487355576320000
22 212389727477760000
23 2729844680048640000

List of values

[1, 4, 6, 25, 104, 484, 2136, 11664, 71136, 451584, 3006720, 21902400, 176774400, 1456185600, 12758860800, 117456998400, 1181072793600, 12023694950400, 130072449024000, 1451792885760000, 17487355576320000, 212389727477760000, 2729844680048640000]

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

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