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.

A298204 Number of unlabeled rooted trees with n nodes in which all outdegrees are either 0, 1, or 3.

Table of values

n a(n)
1 1
2 1
3 1
4 2
5 3
6 5
7 9
8 16
9 29
10 55
11 104
12 200
13 389
14 763
15 1507
16 3002
17 6010
18 12102
19 24484
20 49751
21 101475
22 207723
23 426542
24 878451
25 1813945
26 3754918
27 7790326
28 16196629
29 33739335
30 70410401
31 147187513
32 308171861
33 646188276
34 1356847388
35 2852809425
36 6005542176

List of values

[1, 1, 1, 2, 3, 5, 9, 16, 29, 55, 104, 200, 389, 763, 1507, 3002, 6010, 12102, 24484, 49751, 101475, 207723, 426542, 878451, 1813945, 3754918, 7790326, 16196629, 33739335, 70410401, 147187513, 308171861, 646188276, 1356847388, 2852809425, 6005542176]