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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.

A331992 Matula-Goebel numbers of semi-lone-child-avoiding achiral rooted trees.

Table of values

n a(n)
1 1
2 2
3 4
4 8
5 9
6 16
7 27
8 32
9 49
10 64
11 81
12 128
13 243
14 256
15 343
16 361
17 512
18 529
19 729
20 1024
21 2048
22 2187
23 2401
24 2809
25 4096
26 6561
27 6859
28 8192
29 10609
30 12167
31 16384
32 16807
33 17161
34 19683
35 32768
36 51529
37 59049
38 65536
39 96721
40 117649
41 130321
42 131072
43 148877
44 175561
45 177147

List of values

[1, 2, 4, 8, 9, 16, 27, 32, 49, 64, 81, 128, 243, 256, 343, 361, 512, 529, 729, 1024, 2048, 2187, 2401, 2809, 4096, 6561, 6859, 8192, 10609, 12167, 16384, 16807, 17161, 19683, 32768, 51529, 59049, 65536, 96721, 117649, 130321, 131072, 148877, 175561, 177147]

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

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