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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.

A244534 Number of ordered unlabeled rooted trees with n nodes such that the minimal outdegree of inner nodes equals 5.

Table of values

n a(n)
6 1
7 0
8 0
9 0
10 0
11 5
12 11
13 12
14 13
15 14
16 50
17 136
18 289
19 477
20 703
21 1255
22 2611
23 5489
24 10902
25 19712
26 35455
27 66651
28 130014
29 254737
30 488041
31 920461
32 1741642
33 3338360
34 6453073
35 12425997
36 23780944
37 45451155
38 87224392
39 168253246
40 324863578
41 625728091
42 1202953325
43 2314485753

List of values

[1, 0, 0, 0, 0, 5, 11, 12, 13, 14, 50, 136, 289, 477, 703, 1255, 2611, 5489, 10902, 19712, 35455, 66651, 130014, 254737, 488041, 920461, 1741642, 3338360, 6453073, 12425997, 23780944, 45451155, 87224392, 168253246, 324863578, 625728091, 1202953325, 2314485753]

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

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