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.

A198317 Number of, not necessarily connected, regular simple graphs on n vertices with girth exactly 7.

Table of values

n a(n)
0 0
1 0
2 0
3 0
4 0
5 0
6 0
7 1
8 0
9 0
10 0
11 0
12 0
13 0
14 1
15 1
16 1
17 1
18 1
19 1
20 1
21 2
22 2
23 3
24 4
25 4
26 7
27 5
28 27
29 7
30 553
31 10
32 30379
33 13
34 1782854
35 18
36 95079100
37 24
38 4686063134
39 32

List of values

[0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 2, 2, 3, 4, 4, 7, 5, 27, 7, 553, 10, 30379, 13, 1782854, 18, 95079100, 24, 4686063134, 32]