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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 395 |
| 3 | 2048 |
| 4 | 10673 |
| 5 | 37442 |
| 6 | 108563 |
| 7 | 808062 |
| 8 | 3740629 |
| 9 | 13127340 |
| 10 | 38825157 |
| 11 | 94960850 |
| 12 | 215453191 |
| 13 | 424999552 |
| 14 | 1008380863 |
| 15 | 2063509454 |
| 16 | 4039976617 |
| 17 | 7165289688 |
| 18 | 12299895523 |
| 19 | 19709723854 |
| 20 | 30865936641 |
[2,395,2048,10673,37442,108563,808062,3740629, 13127340,38825157,94960850,215453191,424999552, 1008380863,2063509454,4039976617,7165289688, 12299895523,19709723854,30865936641] |