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.

A051587 Number of 4 X n binary matrices such that any 2 rows have a common 1.

Table of values

n a(n)
0 0
1 1
2 31
3 781
4 17887
5 380821
6 7635991
7 145858861
8 2680379887
9 47772681541
10 831224886151
11 14192847754141
12 238791235611487
13 3971678627940661
14 65470546978625911
15 1071778956904132621
16 17451563620410100687

List of values

[0, 1, 31, 781, 17887, 380821, 7635991, 145858861, 2680379887, 47772681541, 831224886151, 14192847754141, 238791235611487, 3971678627940661, 65470546978625911, 1071778956904132621, 17451563620410100687]

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

Content is available under The OEIS End-User License Agreement.