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.

A221068 Sum of neighbor maps: number of nX4 binary arrays indicating the locations of corresponding elements equal to the sum mod 4 of their king-move neighbors in a random 0..3 nX4 array.

Table of values

n a(n)
1 16
2 56
3 4096
4 65536
5 829184
6 16777216
7 268435456
8 4185880576
9 68719476736
10 1099511627776
11 17551735783424
12 281474976710656
13 4503599627370496
14 72044225131708416
15 1152921504606846976
16 18446744073709551616

List of values

[16, 56, 4096, 65536, 829184, 16777216, 268435456, 4185880576, 68719476736, 1099511627776, 17551735783424, 281474976710656, 4503599627370496, 72044225131708416, 1152921504606846976, 18446744073709551616]

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

Content is available under The OEIS End-User License Agreement.