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.

A099094 a(n) = 3*a(n-2) + 3*a(n-3), a(0)=1, a(1)=0, a(2)=3.

Table of values

n a(n)
0 1
1 0
2 3
3 3
4 9
5 18
6 36
7 81
8 162
9 351
10 729
11 1539
12 3240
13 6804
14 14337
15 30132
16 63423
17 133407
18 280665
19 590490
20 1242216
21 2613465
22 5498118
23 11567043
24 24334749
25 51195483
26 107705376
27 226590696
28 476702577
29 1002888216
30 2109879819
31 4438772379

List of values

[1, 0, 3, 3, 9, 18, 36, 81, 162, 351, 729, 1539, 3240, 6804, 14337, 30132, 63423, 133407, 280665, 590490, 1242216, 2613465, 5498118, 11567043, 24334749, 51195483, 107705376, 226590696, 476702577, 1002888216, 2109879819, 4438772379]