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.

A240654 Number of nX6 0..1 arrays with no element equal to exactly one horizontal or vertical neighbor, with new values 0..1 introduced in row major order.

Table of values

n a(n)
1 1
2 10
3 136
4 1545
5 16629
6 184819
7 2076117
8 23697768
9 272201307
10 3137010024
11 36217287513
12 418547014847
13 4839698233313
14 55979951123885
15 647628362479276
16 7493125930415564
17 86701026167433662
18 1003225793066345318

List of values

[1, 10, 136, 1545, 16629, 184819, 2076117, 23697768, 272201307, 3137010024, 36217287513, 418547014847, 4839698233313, 55979951123885, 647628362479276, 7493125930415564, 86701026167433662, 1003225793066345318]

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

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