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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 14 |
| 2 | 133 |
| 3 | 1086 |
| 4 | 8253 |
| 5 | 60438 |
| 6 | 433861 |
| 7 | 3080462 |
| 8 | 21737485 |
| 9 | 152860422 |
| 10 | 1072817109 |
| 11 | 7520900478 |
| 12 | 52691034397 |
| 13 | 369016181366 |
| 14 | 2583829064677 |
| 15 | 18089666698734 |
| 16 | 126639120006189 |
| 17 | 886519652765670 |
| 18 | 6205820820773365 |
[1,14,133,1086,8253,60438,433861,3080462,21737485, 152860422,1072817109,7520900478,52691034397, 369016181366,2583829064677,18089666698734, 126639120006189,886519652765670,6205820820773365] |