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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.

A218181 T(n,k)=Number of nXk arrays of the minimum value of corresponding elements and their horizontal and vertical neighbors in a random 0..3 nXk array.

Table of values

n a(n)
1 4
2 4
3 4
4 16
5 28
6 16
7 36
8 192
9 192
10 36
11 94
12 956
13 2936
14 956
15 94
16 236
17 5494
18 33152
19 33152
20 5494
21 236
22 602
23 30888
24 434210
25 851332
26 434210
27 30888
28 602
29 1528
30 172038
31 5528352
32 25006046
33 25006046
34 5528352
35 172038
36 1528
37 3882
38 964828
39 70125438
40 710907184

List of values

[4, 4, 4, 16, 28, 16, 36, 192, 192, 36, 94, 956, 2936, 956, 94, 236, 5494, 33152, 33152, 5494, 236, 602, 30888, 434210, 851332, 434210, 30888, 602, 1528, 172038, 5528352, 25006046, 25006046, 5528352, 172038, 1528, 3882, 964828, 70125438, 710907184]

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

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