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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.

A367142 Number of connected simple graphs on n unlabeled vertices without universal vertices.

Table of values

n a(n)
0 1
1 0
2 0
3 0
4 2
5 10
6 78
7 697
8 10073
9 248734
10 11441903
11 994695397
12 163040832612
13 50170816696627
14 28952985431480109
15 31368326987104006472
16 63938133627255371867509
17 245807830666379498961633640
18 1787085789384745555957516856804
19 24634233851674722043622102881490796

List of values

[1, 0, 0, 0, 2, 10, 78, 697, 10073, 248734, 11441903, 994695397, 163040832612, 50170816696627, 28952985431480109, 31368326987104006472, 63938133627255371867509, 245807830666379498961633640, 1787085789384745555957516856804, 24634233851674722043622102881490796]

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

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