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| n | a(n) |
|---|---|
| 0 | 18 |
| 1 | 19 |
| 2 | 37 |
| 3 | 426 |
| 4 | 463 |
| 5 | 2741 |
| 6 | 8686 |
| 7 | 11427 |
| 8 | 202945 |
| 9 | 214372 |
| 10 | 846061 |
| 11 | 4444677 |
| 12 | 5290738 |
| 13 | 62642795 |
| 14 | 67933533 |
| 15 | 130576328 |
| 16 | 4768681341 |
| 17 | 4899257669 |
| 18 | 9667939010 |
| 19 | 111246586779 |
| 20 | 120914525789 |
| 21 | 715819215724 |
[18,19,37,426,463,2741,8686,11427,202945,214372, 846061,4444677,5290738,62642795,67933533, 130576328,4768681341,4899257669,9667939010, 111246586779,120914525789,715819215724] |