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.

A183580 Half the number of nX5 0..3 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 14
2 2216
3 110674
4 5987795
5 320224986
6 17195908538
7 922710498351
8 49526167251643
9 2658141294593252
10 142669482408162261
11 7657427974138825496
12 410994055177191194749
13 22059119691987705997667
14 1183970555622672309839445

List of values

[14, 2216, 110674, 5987795, 320224986, 17195908538, 922710498351, 49526167251643, 2658141294593252, 142669482408162261, 7657427974138825496, 410994055177191194749, 22059119691987705997667, 1183970555622672309839445]

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

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