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.

A225497 Total number of rooted labeled trees over all forests on {1,2,...,n} in which one tree has been specially designated.

Table of values

n a(n)
1 1
2 6
3 42
4 380
5 4320
6 59682
7 974848
8 18423288
9 396000000
10 9548713790
11 255409127424
12 7507985556084
13 240659872940032
14 8355664160156250
15 312437224148828160
16 12519386633593104368
17 535233488907211702272
18 24320165501859426874998
19 1170472960000000000000000
20 59483046140261749951587180

List of values

[1, 6, 42, 380, 4320, 59682, 974848, 18423288, 396000000, 9548713790, 255409127424, 7507985556084, 240659872940032, 8355664160156250, 312437224148828160, 12519386633593104368, 535233488907211702272, 24320165501859426874998, 1170472960000000000000000, 59483046140261749951587180]

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

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