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.

A065889 a(n) = number of unicyclic connected simple graphs whose cycle has length 4.

Table of values

n a(n)
4 3
5 60
6 1080
7 20580
8 430080
9 9920232
10 252000000
11 7015381560
12 212840939520
13 6998969586180
14 248180493969408
15 9445533398437500
16 384213343210045440
17 16639691095281974160
18 764619269867445288960
19 37163398969133506235952
20 1905131520000000000000000

List of values

[3, 60, 1080, 20580, 430080, 9920232, 252000000, 7015381560, 212840939520, 6998969586180, 248180493969408, 9445533398437500, 384213343210045440, 16639691095281974160, 764619269867445288960, 37163398969133506235952, 1905131520000000000000000]

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

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