n | a(n) |
---|---|
1 | 0 |
2 | 4 |
3 | 6 |
4 | 8 |
5 | 18 |
6 | 36 |
7 | 78 |
8 | 160 |
9 | 338 |
10 | 700 |
11 | 1462 |
12 | 3032 |
13 | 6298 |
14 | 13044 |
15 | 27006 |
16 | 55824 |
17 | 115298 |
18 | 237868 |
19 | 490310 |
20 | 1009736 |
21 | 2077738 |
22 | 4271972 |
23 | 8776974 |
24 | 18019968 |
25 | 36972018 |
26 | 75808156 |
27 | 155344598 |
28 | 318145720 |
29 | 651204538 |
30 | 1332235220 |
31 | 2724122782 |
32 | 5567550192 |
[0,4,6,8,18,36,78,160,338,700,1462,3032,6298, 13044,27006,55824,115298,237868,490310,1009736, 2077738,4271972,8776974,18019968,36972018, 75808156,155344598,318145720,651204538,1332235220, 2724122782,5567550192] |