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.

A220823 Number of rooted gene trees with n leaves on the label set [3].

Table of values

n a(n)
1 3
2 6
3 28
4 156
5 948
6 6206
7 42504
8 301548
9 2195100
10 16307598
11 123128940
12 942125110
13 7289062320
14 56926578912
15 448186662992
16 3553364598786
17 28345260090444
18 227337020914322
19 1832102040838776
20 14828608892376288
21 120485979704314764
22 982422914174633154
23 8036158136627878572

List of values

[3, 6, 28, 156, 948, 6206, 42504, 301548, 2195100, 16307598, 123128940, 942125110, 7289062320, 56926578912, 448186662992, 3553364598786, 28345260090444, 227337020914322, 1832102040838776, 14828608892376288, 120485979704314764, 982422914174633154, 8036158136627878572]

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

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