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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.

A209045 Number of nX6 0..3 arrays with no element equal the average of immediate neighbors vertically above and horizontally left of it.

Table of values

n a(n)
1 972
2 1503212
3 2364812680
4 3724317998214
5 5866193355938718
6 9239962457023110368
7 14554067523333615991960
8 22924432479225632829691864
9 36108778942762030367945973348
10 56875733727363424301468394080962

List of values

[972, 1503212, 2364812680, 3724317998214, 5866193355938718, 9239962457023110368, 14554067523333615991960, 22924432479225632829691864, 36108778942762030367945973348, 56875733727363424301468394080962]

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

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