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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.

A233306 Number of (6+1)X(n+1) 0..1 arrays x(i,j) with row sums sum{x(i,j), j=1..n+1} nondecreasing, and column sums sum{i^2*x(i,j), i=1..6+1} nondecreasing.

Table of values

n a(n)
1 258
2 5964
3 135636
4 2694620
5 48504411
6 789640245
7 11764401320
8 161499728247
9 2058135563687

List of values

[258, 5964, 135636, 2694620, 48504411, 789640245, 11764401320, 161499728247, 2058135563687]

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

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