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.

A268892 Number of 7Xn binary arrays with some element plus some horizontally or antidiagonally adjacent neighbor totalling two exactly once.

Table of values

n a(n)
1 0
2 2285
3 60666
4 1706732
5 39670270
6 911930096
7 19876401224
8 426591159751
9 8952723005030
10 185650834624156
11 3802871585155968
12 77225962585267472
13 1555913690406127580
14 31149964203775581289
15 620153220846869863058

List of values

[0, 2285, 60666, 1706732, 39670270, 911930096, 19876401224, 426591159751, 8952723005030, 185650834624156, 3802871585155968, 77225962585267472, 1555913690406127580, 31149964203775581289, 620153220846869863058]

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

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