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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 19 |
| 8 | 33 |
| 9 | 697 |
| 10 | 1417 |
| 11 | 19803 |
| 12 | 53699 |
| 13 | 1477697 |
| 14 | 4737663 |
| 15 | 455317519 |
| 16 | 1851757293 |
| 17 | 336261923485 |
| 18 | 1713147308441 |
| 19 | 437901036631927 |
| 20 | 2765297617197395 |
| 21 | 1334447979633012957 |
| 22 | 10411206726127074327 |
[1,1,1,1,1,1,19,33,697,1417,19803,53699,1477697, 4737663,455317519,1851757293,336261923485, 1713147308441,437901036631927,2765297617197395, 1334447979633012957,10411206726127074327] |