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.

A197315 Number of nX6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 0,1,1,0,0 for x=0,1,2,3,4.

Table of values

n a(n)
1 4
2 6
3 79
4 790
5 4780
6 24704
7 189212
8 1400102
9 8813744
10 62844698
11 436492213
12 3010736948
13 20777197101
14 144191070226
15 998239321771
16 6903357295660
17 47811537748912
18 330940337259970
19 2291691748249353
20 15860451380186238

List of values

[4, 6, 79, 790, 4780, 24704, 189212, 1400102, 8813744, 62844698, 436492213, 3010736948, 20777197101, 144191070226, 998239321771, 6903357295660, 47811537748912, 330940337259970, 2291691748249353, 15860451380186238]

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

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