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.

A000625 Number of n-node steric rooted ternary trees; number of n carbon alkyl radicals C(n)H(2n+1) taking stereoisomers into account.

Table of values

n a(n)
0 1
1 1
2 1
3 2
4 5
5 11
6 28
7 74
8 199
9 551
10 1553
11 4436
12 12832
13 37496
14 110500
15 328092
16 980491
17 2946889
18 8901891
19 27012286
20 82300275
21 251670563
22 772160922
23 2376294040
24 7333282754
25 22688455980
26 70361242924
27 218679264772
28 681018679604
29 2124842137550
30 6641338630714
31 20792003301836

List of values

[1, 1, 1, 2, 5, 11, 28, 74, 199, 551, 1553, 4436, 12832, 37496, 110500, 328092, 980491, 2946889, 8901891, 27012286, 82300275, 251670563, 772160922, 2376294040, 7333282754, 22688455980, 70361242924, 218679264772, 681018679604, 2124842137550, 6641338630714, 20792003301836]

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

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