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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.

A197888 Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 0,2,1,1,1 for x=0,1,2,3,4.

Table of values

n a(n)
1 3
2 78
3 529
4 10827
5 92843
6 1134527
7 13253562
8 145351090
9 1728849664
10 19259087568
11 227927217325
12 2573394846501
13 29961925871053
14 341720932452731
15 3939440439598059
16 45203853693284547
17 520558824415292051

List of values

[3, 78, 529, 10827, 92843, 1134527, 13253562, 145351090, 1728849664, 19259087568, 227927217325, 2573394846501, 29961925871053, 341720932452731, 3939440439598059, 45203853693284547, 520558824415292051]

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

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