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.

A214203 Number of rooted planar binary unlabeled trees with n leaves and caterpillar index <= 5.

Table of values

n a(n)
0 0
1 1
2 1
3 2
4 5
5 14
6 26
7 100
8 333
9 1110
10 3742
11 12764
12 44258
13 154636
14 544660
15 1932360
16 6900029
17 24780390
18 89445174
19 324326060
20 1180834390
21 4315287140
22 15823305516
23 58200045432
24 214672363410
25 793883691004
26 2942917457772
27 10933569255832
28 40704185771812
29 151826357818840
30 567322837830824
31 2123429246035600
32 7960199797453213
33 29884582184913542

List of values

[0, 1, 1, 2, 5, 14, 26, 100, 333, 1110, 3742, 12764, 44258, 154636, 544660, 1932360, 6900029, 24780390, 89445174, 324326060, 1180834390, 4315287140, 15823305516, 58200045432, 214672363410, 793883691004, 2942917457772, 10933569255832, 40704185771812, 151826357818840, 567322837830824, 2123429246035600, 7960199797453213, 29884582184913542]

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

Content is available under The OEIS End-User License Agreement.