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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.

A120412 Number of unlabeled graphs with n equal to the number of vertices plus the number of edges.

Table of values

n a(n)
1 1
2 1
3 2
4 2
5 3
6 5
7 7
8 10
9 16
10 25
11 40
12 66
13 111
14 191
15 343
16 627
17 1182
18 2301
19 4609
20 9511
21 20229
22 44252
23 99564
24 230171
25 546118
26 1328476
27 3309876
28 8436887
29 21980376
30 58473130
31 158692559
32 439012704
33 1237049733
34 3547984011
35 10350963267
36 30699209481
37 92508993842

List of values

[1, 1, 2, 2, 3, 5, 7, 10, 16, 25, 40, 66, 111, 191, 343, 627, 1182, 2301, 4609, 9511, 20229, 44252, 99564, 230171, 546118, 1328476, 3309876, 8436887, 21980376, 58473130, 158692559, 439012704, 1237049733, 3547984011, 10350963267, 30699209481, 92508993842]

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

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