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.

A202884 Number of nX3 0..2 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor.

Table of values

n a(n)
1 9
2 265
3 5493
4 109119
5 2223723
6 45332961
7 922352267
8 18770352883
9 382034229103
10 7775324294349
11 158245814846079
12 3220677883878199
13 65548442623908105
14 1334066131775449299
15 27151407675046583355
16 552595506856781602893

List of values

[9, 265, 5493, 109119, 2223723, 45332961, 922352267, 18770352883, 382034229103, 7775324294349, 158245814846079, 3220677883878199, 65548442623908105, 1334066131775449299, 27151407675046583355, 552595506856781602893]

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

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