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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.

A303328 Number of 6Xn 0..1 arrays with every element equal to 0, 2, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 32
2 2
3 32
4 3
5 62
6 56
7 758
8 822
9 11950
10 15100
11 206189
12 274746
13 3594570
14 5041350
15 62876030
16 92540426
17 1101675155
18 1699317164
19 19329361600
20 31206291570
21 339589941166
22 573084618732
23 5973973630963
24 10524401883764
25 105231506356350

List of values

[32, 2, 32, 3, 62, 56, 758, 822, 11950, 15100, 206189, 274746, 3594570, 5041350, 62876030, 92540426, 1101675155, 1699317164, 19329361600, 31206291570, 339589941166, 573084618732, 5973973630963, 10524401883764, 105231506356350]

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

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