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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.

A007649 Number of set-like molecular species of degree n.

Table of values

n a(n)
0 1
1 1
2 2
3 3
4 7
5 9
6 20
7 26
8 54
9 74
10 137
11 184
12 356
13 473
14 841
15 1154
16 2034
17 2742
18 4740
19 6405
20 10874
21 14794
22 24515
23 33246
24 54955
25 74380
26 120501
27 163828
28 263144
29 356621
30 567330
31 768854
32 1212354
33 1644335
34 2567636
35 3478873
36 5403223
37 7314662
38 11265825
39 15258443
40 23363143
41 31608055
42 48113280
43 65063640
44 98501538
45 133168305
46 200503864

List of values

[1, 1, 2, 3, 7, 9, 20, 26, 54, 74, 137, 184, 356, 473, 841, 1154, 2034, 2742, 4740, 6405, 10874, 14794, 24515, 33246, 54955, 74380, 120501, 163828, 263144, 356621, 567330, 768854, 1212354, 1644335, 2567636, 3478873, 5403223, 7314662, 11265825, 15258443, 23363143, 31608055, 48113280, 65063640, 98501538, 133168305, 200503864]

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

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