cp's OEIS Frontend

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.

A001866 Number of connected graphs with n nodes and n edges.

Table of values

n a(n)
0 0
1 0
2 1
3 24
4 936
5 56640
6 4968000
7 598328640
8 94916183040
9 19200422062080
10 4826695329792000
11 1476585999504000000
12 540272647694971699200
13 233019960215154829516800
14 117009251702203840384204800
15 67680314823703303654732800000
16 44677678066673631080900198400000

List of values

[0, 0, 1, 24, 936, 56640, 4968000, 598328640, 94916183040, 19200422062080, 4826695329792000, 1476585999504000000, 540272647694971699200, 233019960215154829516800, 117009251702203840384204800, 67680314823703303654732800000, 44677678066673631080900198400000]

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

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