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.

A000421 Number of isomorphism classes of connected 3-regular (trivalent, cubic) loopless multigraphs of order 2n.

Table of values

n a(n)
1 1
2 2
3 6
4 20
5 91
6 509
7 3608
8 31856
9 340416
10 4269971
11 61133757
12 978098997
13 17228295555
14 330552900516
15 6853905618223
16 152626436936272
17 3631575281503404
18 91928898608055819
19 2466448432564961852
20 69907637101781318907

List of values

[1, 2, 6, 20, 91, 509, 3608, 31856, 340416, 4269971, 61133757, 978098997, 17228295555, 330552900516, 6853905618223, 152626436936272, 3631575281503404, 91928898608055819, 2466448432564961852, 69907637101781318907]

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

Content is available under The OEIS End-User License Agreement.