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.

A281771 Number of 7Xn 0..1 arrays with no element unequal to a strict majority of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.

Table of values

n a(n)
1 0
2 120
3 672
4 18358
5 201450
6 2848436
7 38998648
8 491290688
9 6531040026
10 83421129072
11 1061825672182
12 13538745056328
13 170149200534678
14 2139241444399412
15 26751312122710302
16 332989768683012174

List of values

[0, 120, 672, 18358, 201450, 2848436, 38998648, 491290688, 6531040026, 83421129072, 1061825672182, 13538745056328, 170149200534678, 2139241444399412, 26751312122710302, 332989768683012174]