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.

A202835 Expansion of e.g.f.: exp(9*x/(1-2*x)) / sqrt(1-4*x^2).

Table of values

n a(n)
0 1
1 9
2 121
3 2025
4 40401
5 927369
6 24000201
7 689220009
8 21710549025
9 743187098889
10 27441452694681
11 1086166287819369
12 45846179189949681
13 2054407698719865225
14 97357866191666622441
15 4862830945258077841449
16 255239441235423753980481
17 14040944744510973314880009

List of values

[1, 9, 121, 2025, 40401, 927369, 24000201, 689220009, 21710549025, 743187098889, 27441452694681, 1086166287819369, 45846179189949681, 2054407698719865225, 97357866191666622441, 4862830945258077841449, 255239441235423753980481, 14040944744510973314880009]