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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 19 |
| 3 | 37 |
| 4 | 1159 |
| 5 | 3367 |
| 6 | 147193 |
| 7 | 569023 |
| 8 | 31940881 |
| 9 | 154205233 |
| 10 | 10572431611 |
| 11 | 61219477501 |
| 12 | 4958470425559 |
| 13 | 33487054193047 |
| 14 | 3128794838527729 |
| 15 | 24144166073186887 |
| 16 | 2556225383077154593 |
| 17 | 22188488621258749153 |
[1,1,19,37,1159,3367,147193,569023,31940881, 154205233,10572431611,61219477501,4958470425559, 33487054193047,3128794838527729,24144166073186887, 2556225383077154593,22188488621258749153] |