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.

A222287 Number of nX5 0..1 arrays with exactly floor(nX5/2) elements unequal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..1 order.

Table of values

n a(n)
1 4
2 8
3 83
4 1125
5 6582
6 89852
7 564838
8 7879795
9 50958999
10 723447048
11 4750196831
12 67994171066
13 451003258750
14 6495868727212
15 43379306929941
16 627562261878355
17 4211483429644946
18 61133435798313074
19 411800332378830207

List of values

[4, 8, 83, 1125, 6582, 89852, 564838, 7879795, 50958999, 723447048, 4750196831, 67994171066, 451003258750, 6495868727212, 43379306929941, 627562261878355, 4211483429644946, 61133435798313074, 411800332378830207]

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

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