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.

A266932 Number of nX5 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 5
3 14
4 52
5 210
6 871
7 3566
8 13899
9 50841
10 173470
11 553021
12 1652621
13 4652572
14 12400392
15 31443461
16 76188169
17 177120011
18 396481264
19 857322183
20 1795814448
21 3653191802
22 7233526075
23 13969016501
24 26357103244
25 48668165412
26 88071764221

List of values

[2, 5, 14, 52, 210, 871, 3566, 13899, 50841, 173470, 553021, 1652621, 4652572, 12400392, 31443461, 76188169, 177120011, 396481264, 857322183, 1795814448, 3653191802, 7233526075, 13969016501, 26357103244, 48668165412, 88071764221]

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

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