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.

A278204 Number of nX4 0..1 arrays with every element both equal and not equal to some elements at offset (-1,-1) (-1,0) (-1,1) (0,-1) (0,1) (1,-1) (1,0) or (1,1), with upper left element zero.

Table of values

n a(n)
1 0
2 46
3 666
4 8242
5 117088
6 1674402
7 23732454
8 336380248
9 4770344900
10 67648850802
11 959306211222
12 13603641359640
13 192909619956550
14 2735599405114814
15 38792794983910750
16 550110139019848618
17 7800963216380203384

List of values

[0, 46, 666, 8242, 117088, 1674402, 23732454, 336380248, 4770344900, 67648850802, 959306211222, 13603641359640, 192909619956550, 2735599405114814, 38792794983910750, 550110139019848618, 7800963216380203384]