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.

A243947 Expansion of g.f. sqrt( (1+x - sqrt(1-18*x+x^2)) / (10*x*(1-18*x+x^2)) ).

Table of values

n a(n)
0 1
1 11
2 155
3 2365
4 37555
5 610897
6 10098997
7 168894355
8 2849270515
9 48395044705
10 826479148001
11 14177519463191
12 244109912494525
13 4216385987238575
14 73024851218517275
15 1267712063327871245
16 22052786911315216595
17 384321597582115655825
18 6708530714274563938225

List of values

[1, 11, 155, 2365, 37555, 610897, 10098997, 168894355, 2849270515, 48395044705, 826479148001, 14177519463191, 244109912494525, 4216385987238575, 73024851218517275, 1267712063327871245, 22052786911315216595, 384321597582115655825, 6708530714274563938225]