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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.

A071214 Number of labeled ordered trees with n nodes such that the root is smaller than all its children.

Table of values

n a(n)
2 1
3 5
4 46
5 614
6 10716
7 230712
8 5903472
9 174942000
10 5890370400
11 222069752640
12 9265980286080
13 423888544154880
14 21094789126924800
15 1134492559101619200
16 65567415318776985600
17 4052502049455940147200
18 266725354163752808755200
19 18624661769541550593024000

List of values

[1, 5, 46, 614, 10716, 230712, 5903472, 174942000, 5890370400, 222069752640, 9265980286080, 423888544154880, 21094789126924800, 1134492559101619200, 65567415318776985600, 4052502049455940147200, 266725354163752808755200, 18624661769541550593024000]

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

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