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.

A331650 Number of binary matrices with n distinct columns and any number of distinct nonzero rows with 4 ones in every column and columns in decreasing lexicographic order.

Table of values

n a(n)
0 1
1 0
2 0
3 840
4 768785
5 1493786233
6 5254074934990
7 29830719723310370
8 255792964622656480490
9 3156204819384156606884415
10 53951801951854013864607338684
11 1238521839654509818636854497532129
12 37207357446549003419594083481144144755
13 1431264458992614322596852782769837314471920

List of values

[1, 0, 0, 840, 768785, 1493786233, 5254074934990, 29830719723310370, 255792964622656480490, 3156204819384156606884415, 53951801951854013864607338684, 1238521839654509818636854497532129, 37207357446549003419594083481144144755, 1431264458992614322596852782769837314471920]

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

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