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.

A222766 Number of nX5 0..1 arrays with exactly floor(nX5/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..1 order.

Table of values

n a(n)
1 4
2 18
3 158
4 2608
5 19766
6 333978
7 2645385
8 45830457
9 370518626
10 6504289924
11 53224723750
12 942396671062
13 7774316625479
14 138492173604656
15 1149166452333809
16 20564313304270211
17 171388475477573948
18 3077759439903425070

List of values

[4, 18, 158, 2608, 19766, 333978, 2645385, 45830457, 370518626, 6504289924, 53224723750, 942396671062, 7774316625479, 138492173604656, 1149166452333809, 20564313304270211, 171388475477573948, 3077759439903425070]