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.

A248091 Expansion of x^3*(1-2x-x^2-x^3+x^4+x^5)/((1+x)*(1-3x+x^2-x^3+3x^4)).

Table of values

n a(n)
0 0
1 0
2 0
3 1
4 0
5 1
6 1
7 3
8 6
9 16
10 39
11 101
12 259
13 670
14 1732
15 4485
16 11613
17 30079
18 77910
19 201812
20 522763
21 1354153
22 3507775
23 9086502
24 23537592
25 60971593
26 157940361
27 409127579
28 1059801190
29 2745301576
30 7111410031
31 18421346973

List of values

[0, 0, 0, 1, 0, 1, 1, 3, 6, 16, 39, 101, 259, 670, 1732, 4485, 11613, 30079, 77910, 201812, 522763, 1354153, 3507775, 9086502, 23537592, 60971593, 157940361, 409127579, 1059801190, 2745301576, 7111410031, 18421346973]