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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.

A061542 Number of connected labeled graphs with n nodes and n+3 edges.

Table of values

n a(n)
1 0
2 0
3 0
4 0
5 45
6 4945
7 331506
8 18602136
9 974679363
10 50088981600
11 2588876118675
12 136440380444544
13 7389687834858186
14 413138671455654144
15 23901631262740105875
16 1432747304604594800640
17 89030607737889046580442
18 5735122824857219251863552
19 382868741381818853194796754

List of values

[0, 0, 0, 0, 45, 4945, 331506, 18602136, 974679363, 50088981600, 2588876118675, 136440380444544, 7389687834858186, 413138671455654144, 23901631262740105875, 1432747304604594800640, 89030607737889046580442, 5735122824857219251863552, 382868741381818853194796754]

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

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