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.

A222938 Sum of neighbor maps: number of 4Xn binary arrays indicating the locations of corresponding elements equal to the sum mod 4 of their horizontal and antidiagonal neighbors in a random 0..3 4Xn array.

Table of values

n a(n)
1 16
2 232
3 4096
4 63488
5 1047664
6 16776992
7 268435456
8 4294967296
9 68702202624
10 1099511627776
11 17592186044416
12 281474975006720
13 4503599620030464
14 72057490958712832
15 1152921504606846976
16 18446744073700638720

List of values

[16, 232, 4096, 63488, 1047664, 16776992, 268435456, 4294967296, 68702202624, 1099511627776, 17592186044416, 281474975006720, 4503599620030464, 72057490958712832, 1152921504606846976, 18446744073700638720]

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

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