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.

A089735 Self-convolution of A004148 (the RNA secondary structure numbers) with itself.

Table of values

n a(n)
0 1
1 2
2 3
3 6
4 13
5 28
6 62
7 140
8 320
9 740
10 1728
11 4068
12 9645
13 23010
14 55195
15 133042
16 322078
17 782758
18 1909091
19 4671098
20 11462607
21 28204212
22 69569278
23 171993316
24 426111203
25 1057757858
26 2630527679
27 6552998126
28 16350465147
29 40857321696
30 102239831436

List of values

[1, 2, 3, 6, 13, 28, 62, 140, 320, 740, 1728, 4068, 9645, 23010, 55195, 133042, 322078, 782758, 1909091, 4671098, 11462607, 28204212, 69569278, 171993316, 426111203, 1057757858, 2630527679, 6552998126, 16350465147, 40857321696, 102239831436]

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

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