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.

A339651 Number of trees with n integer labeled leaves spanning an initial interval of positive integers and all non-leaf nodes having degree 3.

Table of values

n a(n)
0 1
1 1
2 2
3 4
4 14
5 92
6 884
7 11200
8 175460
9 3264456
10 70251004
11 1715832180
12 46881727360
13 1416695166888
14 46909359288468
15 1688908328539092
16 65689047712686678
17 2744769306400145168
18 122618498876673122160
19 5832010466617354498700
20 294228096306408399225374

List of values

[1, 1, 2, 4, 14, 92, 884, 11200, 175460, 3264456, 70251004, 1715832180, 46881727360, 1416695166888, 46909359288468, 1688908328539092, 65689047712686678, 2744769306400145168, 122618498876673122160, 5832010466617354498700, 294228096306408399225374]

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

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