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.

A269015 Number of 5Xn binary arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling two exactly once.

Table of values

n a(n)
1 0
2 145
3 1066
4 14240
5 109058
6 1049588
7 8134304
8 69184207
9 534525058
10 4286305792
11 32838001316
12 255036784680
13 1935580387968
14 14746081110093
15 110945210978202
16 834598743197152
17 6232287294972630
18 46465158121063708
19 344786403529703264

List of values

[0, 145, 1066, 14240, 109058, 1049588, 8134304, 69184207, 534525058, 4286305792, 32838001316, 255036784680, 1935580387968, 14746081110093, 110945210978202, 834598743197152, 6232287294972630, 46465158121063708, 344786403529703264]

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

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