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.

A284161 Number of n X 4 0..1 arrays with the number of 1's horizontally or vertically adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero.

Table of values

n a(n)
1 6
2 42
3 461
4 5888
5 80072
6 1142173
7 16699997
8 247899694
9 3717494360
10 56178550056
11 854108948176
12 13048507894281
13 200142020916533
14 3080098116131143
15 47536024103910119
16 735432363055523510
17 11402172535387288712

List of values

[6, 42, 461, 5888, 80072, 1142173, 16699997, 247899694, 3717494360, 56178550056, 854108948176, 13048507894281, 200142020916533, 3080098116131143, 47536024103910119, 735432363055523510, 11402172535387288712]

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

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