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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.

A273656 Number of forests of labeled rooted trees of height at most 1, with n labels, six of which are used for root nodes and any root may contain >= 1 labels.

Table of values

n a(n)
6 203
7 4718
8 66808
9 750120
10 7370580
11 66562188
12 568136184
13 4663350120
14 37228965774
15 291297376370
16 2245876801168
17 17126594554160
18 129527848747752
19 973416393927768
20 7278979868039760
21 54211596845506800
22 402386221073227314
23 2977842560384800878
24 21977111826224423176

List of values

[203, 4718, 66808, 750120, 7370580, 66562188, 568136184, 4663350120, 37228965774, 291297376370, 2245876801168, 17126594554160, 129527848747752, 973416393927768, 7278979868039760, 54211596845506800, 402386221073227314, 2977842560384800878, 21977111826224423176]

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

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