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| n | a(n) |
|---|---|
| 1 | 6 |
| 2 | 13 |
| 3 | 25 |
| 4 | 48 |
| 5 | 91 |
| 6 | 176 |
| 7 | 345 |
| 8 | 682 |
| 9 | 1355 |
| 10 | 2698 |
| 11 | 5383 |
| 12 | 10752 |
| 13 | 21489 |
| 14 | 42962 |
| 15 | 85907 |
| 16 | 171796 |
| 17 | 343573 |
| 18 | 687126 |
| 19 | 1374231 |
| 20 | 2748438 |
| 21 | 5496851 |
| 22 | 10993676 |
| 23 | 21987325 |
| 24 | 43974622 |
| 25 | 87949215 |
| 26 | 175898400 |
| 27 | 351796769 |
| 28 | 703593506 |
| 29 | 1407186979 |
| 30 | 2814373924 |
| 31 | 5628747813 |
| 32 | 11257495590 |
[6,13,25,48,91,176,345,682,1355,2698,5383,10752, 21489,42962,85907,171796,343573,687126,1374231, 2748438,5496851,10993676,21987325,43974622, 87949215,175898400,351796769,703593506,1407186979, 2814373924,5628747813,11257495590] |