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.

A199650 Number of nX3 0..2 arrays with values 0..2 introduced in row major order and each element equal to no more than two horizontal and vertical neighbors.

Table of values

n a(n)
1 5
2 113
3 2584
4 59212
5 1357484
6 31120632
7 713445976
8 16355879648
9 374961537040
10 8596061907680
11 197066293538400
12 4517780870646656
13 103570953858672192
14 2374383085485820032
15 54433167085958461312
16 1247890324488906825728

List of values

[5, 113, 2584, 59212, 1357484, 31120632, 713445976, 16355879648, 374961537040, 8596061907680, 197066293538400, 4517780870646656, 103570953858672192, 2374383085485820032, 54433167085958461312, 1247890324488906825728]

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

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