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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.

A269096 Number of nX7 0..3 arrays with some element plus some horizontally or vertically adjacent neighbor totalling three exactly once.

Table of values

n a(n)
1 5832
2 7375872
3 5795398368
4 3892946216856
5 2416707037884480
6 1430390977786967280
7 819944297332124826720
8 459338963193935894366016
9 252910225839761737259917296
10 137383600294764153686560207128

List of values

[5832, 7375872, 5795398368, 3892946216856, 2416707037884480, 1430390977786967280, 819944297332124826720, 459338963193935894366016, 252910225839761737259917296, 137383600294764153686560207128]

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

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