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.

A233060 Number of (n+1)X(3+1) 0..1 arrays x(i,j) with row sums sum{x(i,j), j=1..3+1} nondecreasing, and column sums sum{i*x(i,j), i=1..n+1} nondecreasing.

Table of values

n a(n)
1 22
2 130
3 723
4 4393
5 26819
6 162916
7 986252
8 5942365
9 35694392
10 213988742
11 1280906379
12 7658873200
13 45771779047
14 273459449270
15 1633697384455

List of values

[22, 130, 723, 4393, 26819, 162916, 986252, 5942365, 35694392, 213988742, 1280906379, 7658873200, 45771779047, 273459449270, 1633697384455]

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

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