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.

A286211 Number of n X 3 0..1 arrays with the number of 1's king-move adjacent to some 0 two less than the number of 0's adjacent to some 1.

Table of values

n a(n)
1 0
2 17
3 52
4 684
5 2128
6 34896
7 123541
8 1891998
9 7565509
10 106100847
11 470286934
12 6070072444
13 29342743563
14 352400491431
15 1833102380708
16 20699165970978
17 114576111229319
18 1227555854005393
19 7163217232141967
20 73387852919316000

List of values

[0, 17, 52, 684, 2128, 34896, 123541, 1891998, 7565509, 106100847, 470286934, 6070072444, 29342743563, 352400491431, 1833102380708, 20699165970978, 114576111229319, 1227555854005393, 7163217232141967, 73387852919316000]

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

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