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| n | a(n) |
|---|---|
| 0 | 84 |
| 1 | 18327 |
| 2 | 233565 |
| 3 | 1771209 |
| 4 | 10839249 |
| 5 | 59193537 |
| 6 | 301745505 |
| 7 | 1470068769 |
| 8 | 6938902689 |
| 9 | 32002414497 |
| 10 | 145020899745 |
| 11 | 648175476129 |
| 12 | 2865160922529 |
| 13 | 12550658135457 |
| 14 | 54563037754785 |
| 15 | 235694448080289 |
| 16 | 1012548295652769 |
| 17 | 4329277751424417 |
| 18 | 18433454242526625 |
[84,18327,233565,1771209,10839249,59193537, 301745505,1470068769,6938902689,32002414497, 145020899745,648175476129,2865160922529, 12550658135457,54563037754785,235694448080289, 1012548295652769,4329277751424417, 18433454242526625] |