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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.

A038086 Number of n-node rooted identity trees of height at most 7.

Table of values

n a(n)
1 1
2 1
3 1
4 2
5 3
6 6
7 12
8 25
9 51
10 105
11 211
12 421
13 832
14 1641
15 3224
16 6328
17 12382
18 24200
19 47197
20 91915
21 178683
22 346897
23 672443
24 1301850
25 2517078
26 4860938
27 9376300
28 18066270
29 34772627
30 66859667
31 128427832
32 246456677
33 472519632
34 905131358
35 1732313955
36 3312661001

List of values

[1, 1, 1, 2, 3, 6, 12, 25, 51, 105, 211, 421, 832, 1641, 3224, 6328, 12382, 24200, 47197, 91915, 178683, 346897, 672443, 1301850, 2517078, 4860938, 9376300, 18066270, 34772627, 66859667, 128427832, 246456677, 472519632, 905131358, 1732313955, 3312661001]

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

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