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.

A266929 Number of n X n 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 4
3 9
4 35
5 210
6 2577
7 68890
8 4605960
9 821453747

List of values

[2, 4, 9, 35, 210, 2577, 68890, 4605960, 821453747]

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

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