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.

A222507 Number of nX6 0..1 arrays with exactly floor(nX6/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..1 order.

Table of values

n a(n)
1 4
2 32
3 170
4 1753
5 17674
6 195968
7 2220730
8 25587208
9 297738400
10 3488244716
11 41065342664
12 485089112208
13 5747074198174
14 68246839505398
15 812175659130854
16 9682643419696866
17 115625719032846238
18 1382757381681066972

List of values

[4, 32, 170, 1753, 17674, 195968, 2220730, 25587208, 297738400, 3488244716, 41065342664, 485089112208, 5747074198174, 68246839505398, 812175659130854, 9682643419696866, 115625719032846238, 1382757381681066972]

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

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