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.

A183549 Number of nX4 0..2 arrays with each element equal to either the maximum or the minimum of its horizontal and vertical neighbors.

Table of values

n a(n)
1 9
2 299
3 5287
4 95101
5 1728533
6 31363527
7 569461759
8 10339213765
9 187720469393
10 3408294462361
11 61881741606489
12 1123538699592837
13 20399220213631985
14 370372813824090515
15 6724571832069212589
16 122092833670153549855

List of values

[9, 299, 5287, 95101, 1728533, 31363527, 569461759, 10339213765, 187720469393, 3408294462361, 61881741606489, 1123538699592837, 20399220213631985, 370372813824090515, 6724571832069212589, 122092833670153549855]

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

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