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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.

A058792 Number of covers of an unlabeled n-set such that every point of the set is covered by exactly 5 subsets of the cover and that intersection of every 5 subsets of the cover contains at most one point.

Table of values

n a(n)
1 1
2 5
3 44
4 966
5 53535
6 7043925
7 1775617861
8 738134963014
9 461550358993886
10 409321620633426443
11 493892363593918906465

List of values

[1, 5, 44, 966, 53535, 7043925, 1775617861, 738134963014, 461550358993886, 409321620633426443, 493892363593918906465]

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

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