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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.

A218175 Number of nX2 arrays of the minimum value of corresponding elements and their horizontal and vertical neighbors in a random 0..3 nX2 array.

Table of values

n a(n)
1 4
2 28
3 192
4 956
5 5494
6 30888
7 172038
8 964828
9 5400158
10 30225794
11 169223054
12 947302656
13 5303071898
14 29687164126
15 166191023656
16 930351759572
17 5208189255764
18 29155886563482
19 163217149535782
20 913703559802622

List of values

[4, 28, 192, 956, 5494, 30888, 172038, 964828, 5400158, 30225794, 169223054, 947302656, 5303071898, 29687164126, 166191023656, 930351759572, 5208189255764, 29155886563482, 163217149535782, 913703559802622]

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

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