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.

A339647 Number of inequivalent leaf colorings of series-reduced planted trees with n leaves using exactly 2 colors.

Table of values

n a(n)
1 0
2 1
3 3
4 17
5 73
6 369
7 1795
8 9192
9 47324
10 249164
11 1326449
12 7155620
13 38979373
14 214304435
15 1187338427
16 6624057963
17 37178881395
18 209802434879
19 1189621738769
20 6774546637528
21 38729276531965
22 222191966031306
23 1278819536137209
24 7381798618249920
25 42724974018583842

List of values

[0, 1, 3, 17, 73, 369, 1795, 9192, 47324, 249164, 1326449, 7155620, 38979373, 214304435, 1187338427, 6624057963, 37178881395, 209802434879, 1189621738769, 6774546637528, 38729276531965, 222191966031306, 1278819536137209, 7381798618249920, 42724974018583842]

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

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