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.

A245122 Number of n-node rooted identity trees with thinning limbs and root outdegree (branching factor) 3.

Table of values

n a(n)
7 1
8 2
9 4
10 9
11 17
12 35
13 67
14 131
15 249
16 484
17 922
18 1775
19 3393
20 6513
21 12461
22 23910
23 45806
24 87903
25 168619
26 323796
27 621816
28 1195123
29 2297617
30 4420093
31 8506487
32 16380013
33 31554394
34 60817066
35 117266799
36 226217218
37 436572777
38 842895506
39 1628036630
40 3145780899
41 6080759314

List of values

[1, 2, 4, 9, 17, 35, 67, 131, 249, 484, 922, 1775, 3393, 6513, 12461, 23910, 45806, 87903, 168619, 323796, 621816, 1195123, 2297617, 4420093, 8506487, 16380013, 31554394, 60817066, 117266799, 226217218, 436572777, 842895506, 1628036630, 3145780899, 6080759314]

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

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