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| n | a(n) |
|---|---|
| 1 | 222820 |
| 2 | 148328 |
| 3 | 243796 |
| 4 | 922004 |
| 5 | 3230352 |
| 6 | 11094376 |
| 7 | 40265740 |
| 8 | 158864740 |
| 9 | 622829668 |
| 10 | 2349461712 |
| 11 | 8925387720 |
| 12 | 34829656816 |
| 13 | 135741728872 |
| 14 | 519828704980 |
| 15 | 1994445578168 |
| 16 | 7734803041588 |
| 17 | 30010818872708 |
| 18 | 115433535492588 |
[222820,148328,243796,922004,3230352,11094376, 40265740,158864740,622829668,2349461712, 8925387720,34829656816,135741728872,519828704980, 1994445578168,7734803041588,30010818872708, 115433535492588] |