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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 10 |
| 4 | 93 |
| 5 | 1417 |
| 6 | 32152 |
| 7 | 1016489 |
| 8 | 42737945 |
| 9 | 2307295021 |
| 10 | 155607773014 |
| 11 | 12823004639504 |
| 12 | 1267907392540573 |
| 13 | 148160916629902965 |
| 14 | 20199662575448858212 |
| 15 | 3177820001990224608763 |
| 16 | 571395567211112572679633 |
| 17 | 116448309072281063992943561 |
| 18 | 26700057600529091443246943530 |
[1,1,2,10,93,1417,32152,1016489,42737945, 2307295021,155607773014,12823004639504, 1267907392540573,148160916629902965, 20199662575448858212,3177820001990224608763, 571395567211112572679633, 116448309072281063992943561, 26700057600529091443246943530] |