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.

A231833 Number of n X 2 0..3 arrays with no element less than a strict majority of its horizontal and antidiagonal neighbors.

Table of values

n a(n)
1 4
2 50
3 422
4 3823
5 34350
6 308419
7 2771101
8 24892609
9 223618304
10 2008825312
11 18045827096
12 162110668160
13 1456284886944
14 13082209530648
15 117521102664489
16 1055724534522884
17 9483865176690522
18 85196181144951446
19 765340833781554407

List of values

[4, 50, 422, 3823, 34350, 308419, 2771101, 24892609, 223618304, 2008825312, 18045827096, 162110668160, 1456284886944, 13082209530648, 117521102664489, 1055724534522884, 9483865176690522, 85196181144951446, 765340833781554407]

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

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