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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.

A105785 Number of different forests of rooted trees, without isolated vertices, on n labeled nodes.

Table of values

n a(n)
0 1
1 0
2 2
3 9
4 76
5 805
6 10626
7 167839
8 3091768
9 65127465
10 1544951350
11 40770052411
12 1184951084340
13 37616775522781
14 1295202587597842
15 48080003446006575
16 1914305438178286576
17 81379323738092982097
18 3679128029385789284718
19 176267238847686913800547

List of values

[1, 0, 2, 9, 76, 805, 10626, 167839, 3091768, 65127465, 1544951350, 40770052411, 1184951084340, 37616775522781, 1295202587597842, 48080003446006575, 1914305438178286576, 81379323738092982097, 3679128029385789284718, 176267238847686913800547]

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

Content is available under The OEIS End-User License Agreement.