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.

A090470 Expansion of e.g.f.: 1/((1-4*x)*sqrt(1-2*x)).

Table of values

n a(n)
0 1
1 5
2 43
3 531
4 8601
5 172965
6 4161555
7 116658675
8 3735104625
9 134498225925
10 5380583766075
11 236759435017875
12 11364769115001225
13 590975899833644325
14 33094863848730759075
15 1985698021207199173875
16 127084865256044709638625
17 8641777170070911018277125
18 622208177888201070015724875

List of values

[1, 5, 43, 531, 8601, 172965, 4161555, 116658675, 3735104625, 134498225925, 5380583766075, 236759435017875, 11364769115001225, 590975899833644325, 33094863848730759075, 1985698021207199173875, 127084865256044709638625, 8641777170070911018277125, 622208177888201070015724875]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.