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.

A000598 Number of rooted ternary trees with n nodes; number of n-carbon alkyl radicals C(n)H(2n+1) ignoring stereoisomers.

Table of values

n a(n)
0 1
1 1
2 1
3 2
4 4
5 8
6 17
7 39
8 89
9 211
10 507
11 1238
12 3057
13 7639
14 19241
15 48865
16 124906
17 321198
18 830219
19 2156010
20 5622109
21 14715813
22 38649152
23 101821927
24 269010485
25 712566567
26 1891993344
27 5034704828
28 13425117806
29 35866550869
30 95991365288
31 257332864506
32 690928354105

List of values

[1, 1, 1, 2, 4, 8, 17, 39, 89, 211, 507, 1238, 3057, 7639, 19241, 48865, 124906, 321198, 830219, 2156010, 5622109, 14715813, 38649152, 101821927, 269010485, 712566567, 1891993344, 5034704828, 13425117806, 35866550869, 95991365288, 257332864506, 690928354105]

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

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