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.

A077847 Expansion of (1-x)^(-1)/(1-2*x-2*x^2+2*x^3).

Table of values

n a(n)
0 1
1 3
2 9
3 23
4 59
5 147
6 367
7 911
8 2263
9 5615
10 13935
11 34575
12 85791
13 212863
14 528159
15 1310463
16 3251519
17 8067647
18 20017407
19 49667071
20 123233663
21 305766655
22 758666495
23 1882398975
24 4670597631
25 11588660223
26 28753717759
27 71343560703
28 177017236479
29 439214158847

List of values

[1, 3, 9, 23, 59, 147, 367, 911, 2263, 5615, 13935, 34575, 85791, 212863, 528159, 1310463, 3251519, 8067647, 20017407, 49667071, 123233663, 305766655, 758666495, 1882398975, 4670597631, 11588660223, 28753717759, 71343560703, 177017236479, 439214158847]