n | a(n) |
---|---|
1 | 4 |
2 | 9 |
3 | 26 |
4 | 93 |
5 | 309 |
6 | 1043 |
7 | 3597 |
8 | 12865 |
9 | 45491 |
10 | 163686 |
11 | 584594 |
12 | 2103512 |
13 | 7548847 |
14 | 27174662 |
15 | 97768996 |
16 | 352008043 |
17 | 1267200666 |
18 | 4563053012 |
19 | 16431815183 |
20 | 59173883901 |
21 | 213095423135 |
22 | 767419010967 |
23 | 2763770574117 |
24 | 9953309109574 |
[4,9,26,93,309,1043,3597,12865,45491,163686, 584594,2103512,7548847,27174662,97768996, 352008043,1267200666,4563053012,16431815183, 59173883901,213095423135,767419010967, 2763770574117,9953309109574] |