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.

A323389 The number of connected, unlabeled, undirected, edge-signed cubic graphs (admitting loops and multiedges) on 2n vertices where the degree of the first sign is 2 at each node.

Table of values

n a(n)
0 1
1 2
2 5
3 19
4 88
5 553
6 4619
7 49137
8 646815
9 10053183
10 178725865
11 3555840644
12 78048875298
13 1871066903575
14 48617053973267
15 1360733669185473
16 40810827325698897
17 1305690378666580997
18 44387116312631271929
19 1597768080980647428027
20 60710507893875818581964

List of values

[1, 2, 5, 19, 88, 553, 4619, 49137, 646815, 10053183, 178725865, 3555840644, 78048875298, 1871066903575, 48617053973267, 1360733669185473, 40810827325698897, 1305690378666580997, 44387116312631271929, 1597768080980647428027, 60710507893875818581964]

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

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