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.

A215661 G.f. satisfies A(x) = (1 + 2*x*A(x)) * (1 + x*A(x)^2).

Table of values

n a(n)
0 1
1 3
2 14
3 83
4 554
5 3966
6 29756
7 230915
8 1838162
9 14926346
10 123157572
11 1029590062
12 8702171620
13 74238432924
14 638408311800
15 5528154378467
16 48161687414498
17 421848099386322
18 3712675503776372
19 32815429463428794
20 291169073934720940
21 2592569269501484836

List of values

[1, 3, 14, 83, 554, 3966, 29756, 230915, 1838162, 14926346, 123157572, 1029590062, 8702171620, 74238432924, 638408311800, 5528154378467, 48161687414498, 421848099386322, 3712675503776372, 32815429463428794, 291169073934720940, 2592569269501484836]