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.

A302426 Number of nX7 0..1 arrays with every element equal to 0, 1, 3 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 21
2 185
3 188
4 532
5 4223
6 14764
7 48037
8 227283
9 940829
10 3489620
11 14387459
12 59418248
13 233645986
14 941269019
15 3823009297
16 15290825815
17 61530089164
18 248256753643
19 996694292892
20 4011733223504
21 16159420719685
22 64946192160119

List of values

[21, 185, 188, 532, 4223, 14764, 48037, 227283, 940829, 3489620, 14387459, 59418248, 233645986, 941269019, 3823009297, 15290825815, 61530089164, 248256753643, 996694292892, 4011733223504, 16159420719685, 64946192160119]

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

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