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.

A245143 Number of n-node unlabeled rooted trees with thickening limbs and root outdegree (branching factor) 3.

Table of values

n a(n)
4 1
5 0
6 0
7 1
8 1
9 1
10 3
11 3
12 5
13 9
14 12
15 17
16 32
17 42
18 64
19 106
20 157
21 232
22 379
23 563
24 866
25 1362
26 2081
27 3186
28 5028
29 7710
30 11924
31 18659
32 28938
33 44842
34 70254
35 109245
36 170266
37 266562
38 416378
39 650513
40 1020431
41 1597803
42 2504070
43 3932672
44 6174777
45 9698203
46 15258753
47 24005178

List of values

[1, 0, 0, 1, 1, 1, 3, 3, 5, 9, 12, 17, 32, 42, 64, 106, 157, 232, 379, 563, 866, 1362, 2081, 3186, 5028, 7710, 11924, 18659, 28938, 44842, 70254, 109245, 170266, 266562, 416378, 650513, 1020431, 1597803, 2504070, 3932672, 6174777, 9698203, 15258753, 24005178]

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

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