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.

A208396 Number of 5Xn 0..2 arrays with new values 0..2 introduced in row major order and no element equal to more than two of its immediate leftward or upward or right-upward antidiagonal neighbors.

Table of values

n a(n)
1 41
2 9842
3 2056392
4 438083928
5 93120350760
6 19798894881900
7 4209452449879284
8 894976200467603100
9 190281795998287100868
10 40456006404952930502220
11 8601392693737014451368372
12 1828750854693797651745630540

List of values

[41, 9842, 2056392, 438083928, 93120350760, 19798894881900, 4209452449879284, 894976200467603100, 190281795998287100868, 40456006404952930502220, 8601392693737014451368372, 1828750854693797651745630540]

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

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