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.

A077996 Expansion of (1-x)/(1-2*x-x^2-2*x^3).

Table of values

n a(n)
0 1
1 1
2 3
3 9
4 23
5 61
6 163
7 433
8 1151
9 3061
10 8139
11 21641
12 57543
13 153005
14 406835
15 1081761
16 2876367
17 7648165
18 20336219
19 54073337
20 143779223
21 382304221
22 1016534339
23 2702931345
24 7187005471
25 19110010965
26 50812890091
27 135109802089
28 359252516199
29 955240614669

List of values

[1, 1, 3, 9, 23, 61, 163, 433, 1151, 3061, 8139, 21641, 57543, 153005, 406835, 1081761, 2876367, 7648165, 20336219, 54073337, 143779223, 382304221, 1016534339, 2702931345, 7187005471, 19110010965, 50812890091, 135109802089, 359252516199, 955240614669]