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.

A275421 Triangle read by rows: T(n,k) = number of graphs with n edges and k connected components.

Table of values

n a(n)
1 1
2 1
3 1
4 3
5 1
6 1
7 5
8 4
9 1
10 1
11 12
12 8
13 4
14 1
15 1
16 30
17 23
18 9
19 4
20 1
21 1
22 79
23 57
24 26
25 9
26 4
27 1
28 1
29 227
30 160
31 68
32 27
33 9
34 4
35 1
36 1
37 710
38 456
39 197
40 71
41 27
42 9
43 4
44 1
45 1
46 2322
47 1402
48 567
49 208
50 72
51 27
52 9
53 4
54 1
55 1
56 8071
57 4468
58 1748
59 604
60 211
61 72
62 27
63 9
64 4
65 1
66 1
67 29503
68 15071
69 5555
70 1874

List of values

[1, 1, 1, 3, 1, 1, 5, 4, 1, 1, 12, 8, 4, 1, 1, 30, 23, 9, 4, 1, 1, 79, 57, 26, 9, 4, 1, 1, 227, 160, 68, 27, 9, 4, 1, 1, 710, 456, 197, 71, 27, 9, 4, 1, 1, 2322, 1402, 567, 208, 72, 27, 9, 4, 1, 1, 8071, 4468, 1748, 604, 211, 72, 27, 9, 4, 1, 1, 29503, 15071, 5555, 1874]