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.

A266933 Number of nX6 binary arrays with rows lexicographically nondecreasing and columns lexicographically nondecreasing and row sums nondecreasing and column sums nonincreasing.

Table of values

n a(n)
1 2
2 6
3 19
4 82
5 429
6 2577
7 15850
8 96503
9 555060
10 2977370
11 14782970
12 68041108
13 291292442
14 1165800099
15 4383605127
16 15564591521
17 52423001756
18 168200350788
19 516045791503
20 1519124991181

List of values

[2, 6, 19, 82, 429, 2577, 15850, 96503, 555060, 2977370, 14782970, 68041108, 291292442, 1165800099, 4383605127, 15564591521, 52423001756, 168200350788, 516045791503, 1519124991181]

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

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