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.

A198183 Number of nX6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 0,2,1,0,0 for x=0,1,2,3,4.

Table of values

n a(n)
1 1
2 21
3 148
4 883
5 8298
6 51688
7 395340
8 2639341
9 19059216
10 135044844
11 958174742
12 6800519266
13 48283678834
14 342710822044
15 2431565681788
16 17263106688089
17 122543913785532
18 869732001977147
19 6173405546650902
20 43819646823646105

List of values

[1, 21, 148, 883, 8298, 51688, 395340, 2639341, 19059216, 135044844, 958174742, 6800519266, 48283678834, 342710822044, 2431565681788, 17263106688089, 122543913785532, 869732001977147, 6173405546650902, 43819646823646105]