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.

A188408 Number of (7*n) X n binary arrays with rows in nonincreasing order, 7 ones in every column and no more than 2 ones in any row.

Table of values

n a(n)
0 1
1 1
2 8
3 154
4 7340
5 681460
6 111200600
7 29445929253
8 11930327925108
9 7061916086148812
10 5884543061841730064
11 6695191219474600587460
12 10138670050730337096234992
13 19996250425584243540741431296
14 50416254105984511132422687541856
15 159887463958073530310081258765881180

List of values

[1, 1, 8, 154, 7340, 681460, 111200600, 29445929253, 11930327925108, 7061916086148812, 5884543061841730064, 6695191219474600587460, 10138670050730337096234992, 19996250425584243540741431296, 50416254105984511132422687541856, 159887463958073530310081258765881180]

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

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