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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.

A196452 Number of n X 4 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,0,2,4,1 for x=0,1,2,3,4.

Table of values

n a(n)
1 5
2 30
3 131
4 594
5 2930
6 15274
7 76809
8 380093
9 1900745
10 9527317
11 47791454
12 239934641
13 1203634551
14 6035457841
15 30269130212
16 151821524586
17 761535367044
18 3819934203741
19 19160599201791
20 96107073057178
21 482062802792429
22 2417986066816592
23 12128437822354667
24 60835368690467514

List of values

[5, 30, 131, 594, 2930, 15274, 76809, 380093, 1900745, 9527317, 47791454, 239934641, 1203634551, 6035457841, 30269130212, 151821524586, 761535367044, 3819934203741, 19160599201791, 96107073057178, 482062802792429, 2417986066816592, 12128437822354667, 60835368690467514]

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

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