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.

A380761 Number of rooted ordered trees with n internal nodes where each node has out-degree 0, 2, or 6.

Table of values

n a(n)
0 1
1 2
2 16
3 192
4 2720
5 42224
6 694848
7 11907648
8 210240256
9 3797869056
10 69859601920
11 1304037291008
12 24639504760832
13 470342682171392
14 9057003542405120
15 175721074857734144
16 3431733070223491072
17 67407828276358119424
18 1330851767254309142528
19 26395675263287212834816

List of values

[1, 2, 16, 192, 2720, 42224, 694848, 11907648, 210240256, 3797869056, 69859601920, 1304037291008, 24639504760832, 470342682171392, 9057003542405120, 175721074857734144, 3431733070223491072, 67407828276358119424, 1330851767254309142528, 26395675263287212834816]

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

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