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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.

A197474 Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 0,1,0,0,0 for x=0,1,2,3,4.

Table of values

n a(n)
1 5
2 98
3 1300
4 10934
5 151748
6 1265828
7 16544206
8 145244408
9 1830370547
10 16537658774
11 202870487557
12 1878224690406
13 22527034080238
14 212875475502774
15 2505004507267645
16 24087191716817350
17 278905922435987885

List of values

[5, 98, 1300, 10934, 151748, 1265828, 16544206, 145244408, 1830370547, 16537658774, 202870487557, 1878224690406, 22527034080238, 212875475502774, 2505004507267645, 24087191716817350, 278905922435987885]

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

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