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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.

A139383 Number of n-level labeled rooted trees with n leaves.

Table of values

n a(n)
0 1
1 1
2 2
3 12
4 154
5 3455
6 120196
7 5995892
8 406005804
9 35839643175
10 3998289746065
11 550054365477936
12 91478394767427823
13 18091315306315315610
14 4196205472500769304318
15 1128136777063831105273242
16 347994813261017613045578964
17 122080313159891715442898099217

List of values

[1, 1, 2, 12, 154, 3455, 120196, 5995892, 406005804, 35839643175, 3998289746065, 550054365477936, 91478394767427823, 18091315306315315610, 4196205472500769304318, 1128136777063831105273242, 347994813261017613045578964, 122080313159891715442898099217]

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

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