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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.

A286432 Numbers of labeled rooted Greg trees (A005264) with n nodes and root degree 2.

Table of values

n a(n)
1 0
2 1
3 12
4 151
5 2545
6 54466
7 1417318
8 43472780
9 1536228588
10 61466251616
11 2746907348768
12 135619260805568
13 7331022129923648
14 430638151053316480
15 27315015477709844352
16 1860627613021322933248
17 135465573609158928964096
18 10498038569346091127451136
19 862792664850194915870874112

List of values

[0, 1, 12, 151, 2545, 54466, 1417318, 43472780, 1536228588, 61466251616, 2746907348768, 135619260805568, 7331022129923648, 430638151053316480, 27315015477709844352, 1860627613021322933248, 135465573609158928964096, 10498038569346091127451136, 862792664850194915870874112]

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

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