n | a(n) |
---|---|
1 | 20 |
2 | 44 |
3 | 92 |
4 | 178 |
5 | 348 |
6 | 658 |
7 | 1260 |
8 | 2382 |
9 | 4548 |
10 | 8658 |
11 | 16604 |
12 | 31894 |
13 | 61596 |
14 | 119362 |
15 | 232212 |
16 | 453438 |
17 | 887916 |
18 | 1744602 |
19 | 3434636 |
20 | 6780910 |
21 | 13405764 |
22 | 26561986 |
23 | 52679004 |
24 | 104653254 |
25 | 208038684 |
26 | 414084306 |
27 | 824553428 |
28 | 1643457646 |
29 | 3276588012 |
[20,44,92,178,348,658,1260,2382,4548,8658,16604, 31894,61596,119362,232212,453438,887916,1744602, 3434636,6780910,13405764,26561986,52679004, 104653254,208038684,414084306,824553428, 1643457646,3276588012] |