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.

A201230 Number of nX3 0..3 arrays with every row and column running average nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.

Table of values

n a(n)
1 7
2 34
3 114
4 140
5 2462
6 18056
7 62133
8 82861
9 1593643
10 11978376
11 41385355
12 54794307
13 1094405924
14 8362468865
15 28876780544
16 37796133889
17 761894988558
18 5848452096002
19 20148759500753
20 26152640971116
21 532945521296121

List of values

[7, 34, 114, 140, 2462, 18056, 62133, 82861, 1593643, 11978376, 41385355, 54794307, 1094405924, 8362468865, 28876780544, 37796133889, 761894988558, 5848452096002, 20148759500753, 26152640971116, 532945521296121]

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

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