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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.

A228732 Number of independent subsets in the rooted tree with Matula-Goebel number n that do not contain the root.

Table of values

n a(n)
1 1
2 2
3 3
4 4
5 5
6 6
7 5
8 8
9 9
10 10
11 8
12 12
13 8
14 10
15 15
16 16
17 9
18 18
19 9
20 20
21 15
22 16
23 13
24 24
25 25
26 16
27 27
28 20
29 13
30 30
31 13
32 32
33 24
34 18
35 25
36 36
37 14
38 18
39 24
40 40
41 14
42 30
43 14
44 32
45 45
46 26
47 21
48 48
49 25
50 50
51 27
52 32
53 17
54 54
55 40
56 40
57 27
58 26
59 14
60 60
61 22
62 26
63 45
64 64
65 40
66 48
67 17
68 36

List of values

[1, 2, 3, 4, 5, 6, 5, 8, 9, 10, 8, 12, 8, 10, 15, 16, 9, 18, 9, 20, 15, 16, 13, 24, 25, 16, 27, 20, 13, 30, 13, 32, 24, 18, 25, 36, 14, 18, 24, 40, 14, 30, 14, 32, 45, 26, 21, 48, 25, 50, 27, 32, 17, 54, 40, 40, 27, 26, 14, 60, 22, 26, 45, 64, 40, 48, 17, 36]

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

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