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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.

A327228 Number of set-systems with n vertices and at least one endpoint/leaf.

Table of values

n a(n)
0 0
1 1
2 6
3 65
4 3297
5 2537672
6 412184904221
7 4132070624893905681577
8 174224571863520492218909428465944685216436
9 133392486801388257127953774730008469745829658368044283629394202488602260177922751

List of values

[0, 1, 6, 65, 3297, 2537672, 412184904221, 4132070624893905681577, 174224571863520492218909428465944685216436, 133392486801388257127953774730008469745829658368044283629394202488602260177922751]

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

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