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.

A363308 Expansion of g.f. C(x*C(x)^3), where C(x) = 1 + x*C(x)^2 is the g.f. of the Catalan numbers (A000108).

Table of values

n a(n)
0 1
1 1
2 5
3 26
4 141
5 790
6 4542
7 26668
8 159333
9 966038
10 5930678
11 36801660
12 230491410
13 1455283172
14 9253674120
15 59209786992
16 380961295445
17 2463303690790
18 15998687418030
19 104325569140156
20 682768883525830
21 4483232450501492
22 29527005540912660
23 195006621974036808

List of values

[1, 1, 5, 26, 141, 790, 4542, 26668, 159333, 966038, 5930678, 36801660, 230491410, 1455283172, 9253674120, 59209786992, 380961295445, 2463303690790, 15998687418030, 104325569140156, 682768883525830, 4483232450501492, 29527005540912660, 195006621974036808]