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.

A279130 Number of nX4 0..1 arrays with no element equal to a strict majority of its horizontal and vertical neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.

Table of values

n a(n)
1 3
2 34
3 256
4 1324
5 6396
6 30074
7 129264
8 535814
9 2150797
10 8418336
11 32296969
12 121849424
13 453295302
14 1666387390
15 6063302940
16 21865526486
17 78234877789
18 277985152886
19 981636776095
20 3447186735368
21 12044802324840
22 41894649008470

List of values

[3, 34, 256, 1324, 6396, 30074, 129264, 535814, 2150797, 8418336, 32296969, 121849424, 453295302, 1666387390, 6063302940, 21865526486, 78234877789, 277985152886, 981636776095, 3447186735368, 12044802324840, 41894649008470]