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.

A222570 Number of nX5 0..2 arrays with no more than floor(nX5/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..2 order.

Table of values

n a(n)
1 5
2 25
3 134
4 3516
5 30766
6 881766
7 9004283
8 287554360
9 2996904309
10 97314847813
11 1017926334514
12 33241999169841
13 348578922829704
14 11400450205720554
15 119870153063857315
16 3922257706849216462
17 41351192613216141769

List of values

[5, 25, 134, 3516, 30766, 881766, 9004283, 287554360, 2996904309, 97314847813, 1017926334514, 33241999169841, 348578922829704, 11400450205720554, 119870153063857315, 3922257706849216462, 41351192613216141769]