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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.

A220642 Number of ways to reciprocally link elements of an n X 6 array either to themselves or to exactly one king-move neighbor.

Table of values

n a(n)
0 1
1 13
2 3096
3 373177
4 53841725
5 7444342896
6 1040315976961
7 145000880411157
8 20223491612180232
9 2820152941289640505
10 393283923444213896309
11 54844809649495130675968
12 7648317475647716579501281
13 1066586359952790876210231837
14 148739462164292054050115639320

List of values

[1, 13, 3096, 373177, 53841725, 7444342896, 1040315976961, 145000880411157, 20223491612180232, 2820152941289640505, 393283923444213896309, 54844809649495130675968, 7648317475647716579501281, 1066586359952790876210231837, 148739462164292054050115639320]

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

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