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.

A268787 Number of nX6 binary arrays with some element plus some horizontally, vertically or antidiagonally adjacent neighbor totalling two exactly once.

Table of values

n a(n)
1 20
2 338
3 4207
4 46195
5 477128
6 4725018
7 45515227
8 429442918
9 3988796543
10 36591758790
11 332327545513
12 2993282062865
13 26773510121640
14 238060527618025
15 2105957538309226
16 18547209960131466
17 162707970808249851

List of values

[20, 338, 4207, 46195, 477128, 4725018, 45515227, 429442918, 3988796543, 36591758790, 332327545513, 2993282062865, 26773510121640, 238060527618025, 2105957538309226, 18547209960131466, 162707970808249851]

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

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