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| n | a(n) |
|---|---|
| 1 | 1152 |
| 2 | 2993 |
| 3 | 9643 |
| 4 | 20187 |
| 5 | 85563 |
| 6 | 302218 |
| 7 | 652210 |
| 8 | 2786331 |
| 9 | 9882896 |
| 10 | 21364917 |
| 11 | 91892076 |
| 12 | 329431402 |
| 13 | 713269143 |
| 14 | 3086478489 |
| 15 | 11174739662 |
| 16 | 24228015605 |
| 17 | 105441386320 |
| 18 | 385277405784 |
| 19 | 836364909521 |
| 20 | 3658820031018 |
| 21 | 13479381001111 |
[1152,2993,9643,20187,85563,302218,652210,2786331, 9882896,21364917,91892076,329431402,713269143, 3086478489,11174739662,24228015605,105441386320, 385277405784,836364909521,3658820031018, 13479381001111] |