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.

A231519 Number of n X 4 0..1 arrays with no element less than a strict majority of its horizontal, diagonal and antidiagonal neighbors.

Table of values

n a(n)
1 7
2 107
3 865
4 7697
5 66499
6 571226
7 4944075
8 42759650
9 369356733
10 3191749214
11 27585602947
12 238391033438
13 2060118342038
14 17803462264679
15 153856523007378
16 1329613892196866
17 11490414159104930
18 99299276258131228
19 858136420916602390

List of values

[7, 107, 865, 7697, 66499, 571226, 4944075, 42759650, 369356733, 3191749214, 27585602947, 238391033438, 2060118342038, 17803462264679, 153856523007378, 1329613892196866, 11490414159104930, 99299276258131228, 858136420916602390]

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

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