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.

A077855 Expansion of 1/((1-2*x+x^2-x^3)*(1-x)).

Table of values

n a(n)
0 1
1 3
2 6
3 11
4 20
5 36
6 64
7 113
8 199
9 350
10 615
11 1080
12 1896
13 3328
14 5841
15 10251
16 17990
17 31571
18 55404
19 97228
20 170624
21 299425
22 525455
23 922110
24 1618191
25 2839728
26 4983376
27 8745216
28 15346785
29 26931731
30 47261894
31 82938843
32 145547524
33 255418100
34 448227520
35 786584465

List of values

[1, 3, 6, 11, 20, 36, 64, 113, 199, 350, 615, 1080, 1896, 3328, 5841, 10251, 17990, 31571, 55404, 97228, 170624, 299425, 525455, 922110, 1618191, 2839728, 4983376, 8745216, 15346785, 26931731, 47261894, 82938843, 145547524, 255418100, 448227520, 786584465]