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.

A275133 Number of 4 X n 0..2 arrays with no element equal to any value at offset (-2,-2) (-1,0) or (-1,1) and new values introduced in order 0..2.

Table of values

n a(n)
1 4
2 36
3 129
4 568
5 2545
6 11092
7 48451
8 212897
9 933888
10 4092697
11 17946318
12 78700481
13 345078541
14 1513083403
15 6634687537
16 29092060534
17 127563508661
18 559344843153
19 2452635533674
20 10754397617406
21 47156241405767
22 206772290181505

List of values

[4, 36, 129, 568, 2545, 11092, 48451, 212897, 933888, 4092697, 17946318, 78700481, 345078541, 1513083403, 6634687537, 29092060534, 127563508661, 559344843153, 2452635533674, 10754397617406, 47156241405767, 206772290181505]

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

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