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.

A051366 Number of 6-element families of an n-element set such that every 4 members of the family have a nonempty intersection.

Table of values

n a(n)
0 0
1 0
2 0
3 0
4 112
5 39761
6 5318420
7 506289623
8 41378309308
9 3133123494417
10 227657567966500
11 16152548751321851
12 1129224692910819164
13 78169242144478858373
14 5373159786842137703140
15 367368738925063893430959

List of values

[0, 0, 0, 0, 112, 39761, 5318420, 506289623, 41378309308, 3133123494417, 227657567966500, 16152548751321851, 1129224692910819164, 78169242144478858373, 5373159786842137703140, 367368738925063893430959]

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

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