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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.

A327227 Number of labeled simple graphs covering n vertices with at least one endpoint/leaf.

Table of values

n a(n)
0 0
1 0
2 1
3 3
4 31
5 515
6 15381
7 834491
8 83016613
9 15330074139
10 5324658838645
11 3522941267488973
12 4489497643961740521
13 11119309286377621015089
14 53893949089393110881259181
15 513788884660608277842596504415
16 9669175277199248753133328740702449

List of values

[0, 0, 1, 3, 31, 515, 15381, 834491, 83016613, 15330074139, 5324658838645, 3522941267488973, 4489497643961740521, 11119309286377621015089, 53893949089393110881259181, 513788884660608277842596504415, 9669175277199248753133328740702449]

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

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