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.

A050381 Number of series-reduced planted trees with n leaves of 2 colors.

Table of values

n a(n)
1 2
2 3
3 10
4 40
5 170
6 785
7 3770
8 18805
9 96180
10 502381
11 2667034
12 14351775
13 78096654
14 429025553
15 2376075922
16 13252492311
17 74372374366
18 419651663108
19 2379399524742
20 13549601275893
21 77460249369658
22 444389519874841

List of values

[2, 3, 10, 40, 170, 785, 3770, 18805, 96180, 502381, 2667034, 14351775, 78096654, 429025553, 2376075922, 13252492311, 74372374366, 419651663108, 2379399524742, 13549601275893, 77460249369658, 444389519874841]

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

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