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.

A128042 Triangle read by columns: number of n-node (unlabeled) connected graphs with girth k, for n >= 3, k >= 3.

Table of values

n a(n)
3 1
4 3
5 1
6 15
7 2
8 1
9 93
10 11
11 1
12 1
13 794
14 41
15 5
16 1
17 1
18 10850
19 220
20 16
21 6
22 1
23 1
24 259700
25 1243
26 66
27 17
28 5
29 1
30 1
31 11706739
32 9368
33 266
34 69
35 15
36 6
37 1
38 1
39 1006609723
40 89049
41 1235
42 239
43 58
44 18
45 6
46 1
47 1
48 164058686415
49 1135894
50 6350
51 962
52 202
53 74
54 19
55 7
56 1
57 1

List of values

[1, 3, 1, 15, 2, 1, 93, 11, 1, 1, 794, 41, 5, 1, 1, 10850, 220, 16, 6, 1, 1, 259700, 1243, 66, 17, 5, 1, 1, 11706739, 9368, 266, 69, 15, 6, 1, 1, 1006609723, 89049, 1235, 239, 58, 18, 6, 1, 1, 164058686415, 1135894, 6350, 962, 202, 74, 19, 7, 1, 1]