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.

A131178 Non-plane increasing unary binary (0-1-2) trees where the nodes of outdegree 1 come in 2 colors.

Table of values

n a(n)
1 1
2 2
3 5
4 16
5 64
6 308
7 1730
8 11104
9 80176
10 643232
11 5676560
12 54650176
13 569980384
14 6401959328
15 77042282000
16 988949446144
17 13488013248256
18 194780492544512
19 2969094574403840
20 47640794742439936
21 802644553810683904
22 14166772337295285248
23 261410917571703825920

List of values

[1, 2, 5, 16, 64, 308, 1730, 11104, 80176, 643232, 5676560, 54650176, 569980384, 6401959328, 77042282000, 988949446144, 13488013248256, 194780492544512, 2969094574403840, 47640794742439936, 802644553810683904, 14166772337295285248, 261410917571703825920]

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

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