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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.

A004110 Number of n-node unlabeled graphs without endpoints (i.e., no nodes of degree 1).

Table of values

n a(n)
0 1
1 1
2 1
3 2
4 5
5 16
6 78
7 588
8 8047
9 205914
10 10014882
11 912908876
12 154636289460
13 48597794716736
14 28412296651708628
15 31024938435794151088
16 63533059372622888758054
17 244916078509480823407040988
18 1783406527599529094009748567708
19 24605674623474428415849066062642456

List of values

[1, 1, 1, 2, 5, 16, 78, 588, 8047, 205914, 10014882, 912908876, 154636289460, 48597794716736, 28412296651708628, 31024938435794151088, 63533059372622888758054, 244916078509480823407040988, 1783406527599529094009748567708, 24605674623474428415849066062642456]

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

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