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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.

A375467 Triangle read by rows: Number of unlabeled rooted trees with n vertices where the level of a vertex is bounded by k.

Table of values

n a(n)
0 0
1 0
2 1
3 0
4 0
5 1
6 0
7 0
8 1
9 2
10 0
11 0
12 1
13 3
14 4
15 0
16 0
17 1
18 5
19 8
20 9
21 0
22 0
23 1
24 7
25 15
26 19
27 20
28 0
29 0
30 1
31 11
32 29
33 42
34 47
35 48
36 0
37 0
38 1
39 15
40 53
41 89
42 108
43 114
44 115
45 0
46 0
47 1
48 22
49 98
50 191
51 252
52 278
53 285
54 286
55 0
56 0
57 1
58 30
59 177
60 402
61 582
62 676
63 710
64 718
65 719

List of values

[0, 0, 1, 0, 0, 1, 0, 0, 1, 2, 0, 0, 1, 3, 4, 0, 0, 1, 5, 8, 9, 0, 0, 1, 7, 15, 19, 20, 0, 0, 1, 11, 29, 42, 47, 48, 0, 0, 1, 15, 53, 89, 108, 114, 115, 0, 0, 1, 22, 98, 191, 252, 278, 285, 286, 0, 0, 1, 30, 177, 402, 582, 676, 710, 718, 719]

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

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