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.

A346787 Ordered lone-child-avoiding trees where vertices have decreasing subtree sizes.

Table of values

n a(n)
1 1
2 0
3 1
4 1
5 2
6 3
7 6
8 10
9 19
10 35
11 68
12 128
13 253
14 489
15 981
16 1930
17 3899
18 7771
19 15858
20 31915
21 65503
22 133070
23 274631
24 561371
25 1164240
26 2393652
27 4983614
28 10299238
29 21511537
30 44637483
31 93552858
32 194809152
33 409270569
34 855199845
35 1800958182
36 3773297872
37 7963655481

List of values

[1, 0, 1, 1, 2, 3, 6, 10, 19, 35, 68, 128, 253, 489, 981, 1930, 3899, 7771, 15858, 31915, 65503, 133070, 274631, 561371, 1164240, 2393652, 4983614, 10299238, 21511537, 44637483, 93552858, 194809152, 409270569, 855199845, 1800958182, 3773297872, 7963655481]

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

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