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.

A214202 Number of rooted planar binary unlabeled trees with n leaves and caterpillar index = 4.

Table of values

n a(n)
0 0
1 0
2 0
3 0
4 4
5 0
6 8
7 32
8 104
9 352
10 1264
11 4480
12 15992
13 57408
14 207152
15 750144
16 2725456
17 9931328
18 36282464
19 132852224
20 487443672
21 1791742592
22 6597006896
23 24326190016
24 89825979568
25 332110462016
26 1229345599520
27 4555536068352
28 16898439030192
29 62743172964224
30 233170424975072
31 867250463225984
32 3228189434389152
33 12025362901992064
34 44827564359795392

List of values

[0, 0, 0, 0, 4, 0, 8, 32, 104, 352, 1264, 4480, 15992, 57408, 207152, 750144, 2725456, 9931328, 36282464, 132852224, 487443672, 1791742592, 6597006896, 24326190016, 89825979568, 332110462016, 1229345599520, 4555536068352, 16898439030192, 62743172964224, 233170424975072, 867250463225984, 3228189434389152, 12025362901992064, 44827564359795392]

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

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