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.

A284109 Number of n X 4 0..1 arrays with the number of 1's king-move 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 46
3 435
4 5896
5 80200
6 1143533
7 16442183
8 240146980
9 3538905880
10 52568393480
11 785872613710
12 11812436439395
13 178382105544907
14 2704771593353921
15 41159406062915663
16 628343298365437332
17 9619941922149572518

List of values

[6, 46, 435, 5896, 80200, 1143533, 16442183, 240146980, 3538905880, 52568393480, 785872613710, 11812436439395, 178382105544907, 2704771593353921, 41159406062915663, 628343298365437332, 9619941922149572518]

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

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