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.

A274699 Number of varied unrooted labeled trees on n nodes, i.e., trees with unique vertex degree except for the leaves.

Table of values

n a(n)
1 1
2 1
3 3
4 4
5 65
6 126
7 637
8 21344
9 57465
10 330850
11 2023901
12 156312432
13 502733101
14 3464645380
15 21505493115
16 194182086016
17 28828634104193
18 108228186522378
19 842870098110349
20 5690185704481040
21 49492420589959221
22 521939648330427580
23 151814675979620347079
24 642254623640191155552
25 5633344428589261601425
26 40942919469553204283076
27 370068971963735972601207

List of values

[1, 1, 3, 4, 65, 126, 637, 21344, 57465, 330850, 2023901, 156312432, 502733101, 3464645380, 21505493115, 194182086016, 28828634104193, 108228186522378, 842870098110349, 5690185704481040, 49492420589959221, 521939648330427580, 151814675979620347079, 642254623640191155552, 5633344428589261601425, 40942919469553204283076, 370068971963735972601207]

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

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