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.

A269093 Number of nX4 0..3 arrays with some element plus some horizontally or vertically adjacent neighbor totalling three exactly once.

Table of values

n a(n)
1 108
2 11424
3 715320
4 37963968
5 1856325000
6 86415197088
7 3892946216856
8 171307237216320
9 7406621052177000
10 315868041326151072
11 13323538607075686392
12 556962735401445373632
13 23108630644746952831560

List of values

[108, 11424, 715320, 37963968, 1856325000, 86415197088, 3892946216856, 171307237216320, 7406621052177000, 315868041326151072, 13323538607075686392, 556962735401445373632, 23108630644746952831560]

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

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