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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 2 |
| 4 | 2 |
| 5 | 7 |
| 6 | 7 |
| 7 | 21 |
| 8 | 35 |
| 9 | 78 |
| 10 | 158 |
| 11 | 323 |
| 12 | 682 |
| 13 | 1395 |
| 14 | 2920 |
| 15 | 6035 |
| 16 | 12551 |
| 17 | 26048 |
| 18 | 54067 |
| 19 | 112291 |
| 20 | 233073 |
| 21 | 483986 |
| 22 | 1004757 |
| 23 | 2086142 |
| 24 | 4331198 |
| 25 | 8992360 |
| 26 | 18669984 |
| 27 | 38762260 |
| 28 | 80478161 |
| 29 | 167087798 |
| 30 | 346906568 |
| 31 | 720244459 |
| 32 | 1495365541 |
| 33 | 3104666070 |
| 34 | 6445881590 |
[1,2,2,2,7,7,21,35,78,158,323,682,1395,2920,6035, 12551,26048,54067,112291,233073,483986,1004757, 2086142,4331198,8992360,18669984,38762260, 80478161,167087798,346906568,720244459,1495365541, 3104666070,6445881590] |