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.

A076036 G.f.: 1/(1 - 5*x*C(x)), where C(x) = (1 - sqrt(1 - 4*x))/(2*x) = g.f. for the Catalan numbers A000108.

Table of values

n a(n)
0 1
1 5
2 30
3 185
4 1150
5 7170
6 44760
7 279585
8 1746870
9 10916150
10 68219860
11 426353130
12 2664633580
13 16653699860
14 104084695500
15 650526003825
16 4065775405350
17 25411052086350
18 158818913483700
19 992617612224750
20 6203857867325700
21 38774103465635100
22 242338116077385600

List of values

[1, 5, 30, 185, 1150, 7170, 44760, 279585, 1746870, 10916150, 68219860, 426353130, 2664633580, 16653699860, 104084695500, 650526003825, 4065775405350, 25411052086350, 158818913483700, 992617612224750, 6203857867325700, 38774103465635100, 242338116077385600]