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.

A231970 Number of (n+1)X(n+1) 0..1 arrays with no element having a strict majority of its horizontal and vertical neighbors equal to one.

Table of values

n a(n)
1 9
2 56
3 841
4 43983
5 6507601
6 2641967397
7 3036560660329
8 9981109155098235
9 93538123901225727364
10 2480246214908598898309094
11 186787722909431013956841219409
12 39975590681225962593258073864460074

List of values

[9, 56, 841, 43983, 6507601, 2641967397, 3036560660329, 9981109155098235, 93538123901225727364, 2480246214908598898309094, 186787722909431013956841219409, 39975590681225962593258073864460074]

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

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