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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.

A368186 Number of n-covers of an unlabeled n-set.

Table of values

n a(n)
0 1
1 1
2 2
3 9
4 87
5 1973
6 118827
7 20576251
8 10810818595
9 17821875542809
10 94589477627232498
11 1651805220868992729874
12 96651473179540769701281003
13 19238331716776641088273777321428
14 13192673305726630096303157068241728202
15 31503323006770789288222386469635474844616195

List of values

[1, 1, 2, 9, 87, 1973, 118827, 20576251, 10810818595, 17821875542809, 94589477627232498, 1651805220868992729874, 96651473179540769701281003, 19238331716776641088273777321428, 13192673305726630096303157068241728202, 31503323006770789288222386469635474844616195]

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

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