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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.

A222389 Sum of neighbor maps: number of 4Xn binary arrays indicating the locations of corresponding elements equal to the sum mod 3 of their horizontal and antidiagonal neighbors in a random 0..2 4Xn array.

Table of values

n a(n)
1 16
2 232
3 3968
4 63488
5 1048576
6 16776896
7 268369920
8 4294961152
9 68702608704
10 1099511627776
11 17592160878592
12 281474976700416
13 4503599627370496

List of values

[16, 232, 3968, 63488, 1048576, 16776896, 268369920, 4294961152, 68702608704, 1099511627776, 17592160878592, 281474976700416, 4503599627370496]

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

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