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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.

A196282 Number of n X 3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,0,3,1,4 for x=0,1,2,3,4.

Table of values

n a(n)
1 4
2 8
3 7
4 50
5 111
6 259
7 728
8 1800
9 4696
10 12185
11 32136
12 83679
13 217955
14 570882
15 1489582
16 3896818
17 10200627
18 26688308
19 69841985
20 182768771
21 478336792
22 1251948660
23 3276977630
24 8577766977
25 22452853682
26 58772743019
27 153844929073
28 402711226676

List of values

[4, 8, 7, 50, 111, 259, 728, 1800, 4696, 12185, 32136, 83679, 217955, 570882, 1489582, 3896818, 10200627, 26688308, 69841985, 182768771, 478336792, 1251948660, 3276977630, 8577766977, 22452853682, 58772743019, 153844929073, 402711226676]

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

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