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.

A000602 Number of n-node unrooted quartic trees; number of n-carbon alkanes C(n)H(2n+2) ignoring stereoisomers.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 2
5 3
6 5
7 9
8 18
9 35
10 75
11 159
12 355
13 802
14 1858
15 4347
16 10359
17 24894
18 60523
19 148284
20 366319
21 910726
22 2278658
23 5731580
24 14490245
25 36797588
26 93839412
27 240215803
28 617105614
29 1590507121
30 4111846763
31 10660307791
32 27711253769

List of values

[1, 1, 1, 1, 2, 3, 5, 9, 18, 35, 75, 159, 355, 802, 1858, 4347, 10359, 24894, 60523, 148284, 366319, 910726, 2278658, 5731580, 14490245, 36797588, 93839412, 240215803, 617105614, 1590507121, 4111846763, 10660307791, 27711253769]

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

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