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.

A268747 Number of nX5 binary arrays with some element plus some horizontally or vertically adjacent neighbor totalling two no more than once.

Table of values

n a(n)
1 23
2 244
3 2615
4 26334
5 255651
6 2425799
7 22577073
8 207252725
9 1880654551
10 16909709308
11 150867667407
12 1337324783132
13 11788337576943
14 103412756868981
15 903363696442081
16 7862056896605875
17 68198486775427551
18 589834799847933624

List of values

[23, 244, 2615, 26334, 255651, 2425799, 22577073, 207252725, 1880654551, 16909709308, 150867667407, 1337324783132, 11788337576943, 103412756868981, 903363696442081, 7862056896605875, 68198486775427551, 589834799847933624]

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

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