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.

A015530 Expansion of x/(1 - 4*x - 3*x^2).

Table of values

n a(n)
0 0
1 1
2 4
3 19
4 88
5 409
6 1900
7 8827
8 41008
9 190513
10 885076
11 4111843
12 19102600
13 88745929
14 412291516
15 1915403851
16 8898489952
17 41340171361
18 192056155300
19 892245135283
20 4145149007032
21 19257331433977
22 89464772757004

List of values

[0, 1, 4, 19, 88, 409, 1900, 8827, 41008, 190513, 885076, 4111843, 19102600, 88745929, 412291516, 1915403851, 8898489952, 41340171361, 192056155300, 892245135283, 4145149007032, 19257331433977, 89464772757004]

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

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