cp's OEIS Frontend

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.

A222651 Number of nX2 0..3 arrays with no more than floor(nX2/2) elements equal to at least one king-move neighbor, with new values introduced in row major 0..3 order.

Table of values

n a(n)
1 1
2 7
3 60
4 724
5 7364
6 84816
7 927152
8 10585088
9 119198624
10 1364437632
11 15584195392
12 179262541056
13 2063988209152
14 23852186896896
15 276080500860416
16 3202923732204544
17 37215026284325888
18 433119059193262080

List of values

[1, 7, 60, 724, 7364, 84816, 927152, 10585088, 119198624, 1364437632, 15584195392, 179262541056, 2063988209152, 23852186896896, 276080500860416, 3202923732204544, 37215026284325888, 433119059193262080]

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

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