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.

A266467 Number of nX5 binary arrays with rows and columns lexicographically nondecreasing and column sums nonincreasing.

Table of values

n a(n)
1 2
2 7
3 28
4 137
5 735
6 4074
7 22128
8 113677
9 544142
10 2417707
11 9991874
12 38585111
13 139969744
14 479482160
15 1558677189
16 4829461991
17 14318767180
18 40765225229
19 111787710303
20 296081929163
21 759290568963
22 1889449601320
23 4571408444209

List of values

[2, 7, 28, 137, 735, 4074, 22128, 113677, 544142, 2417707, 9991874, 38585111, 139969744, 479482160, 1558677189, 4829461991, 14318767180, 40765225229, 111787710303, 296081929163, 759290568963, 1889449601320, 4571408444209]

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

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