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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 53 |
| 3 | 2333 |
| 4 | 191673 |
| 5 | 25307913 |
| 6 | 4900979093 |
| 7 | 1308599657693 |
| 8 | 460755584003313 |
| 9 | 206844794964734673 |
| 10 | 115313659955341400333 |
| 11 | 78158334287649490486853 |
| 12 | 63294640267864707577746153 |
| 13 | 60357724113527363258814802233 |
| 14 | 66943314938342593826952764256773 |
| 15 | 85443499990582824984241143043808813 |
[1,3,53,2333,191673,25307913,4900979093, 1308599657693,460755584003313,206844794964734673, 115313659955341400333,78158334287649490486853, 63294640267864707577746153, 60357724113527363258814802233, 66943314938342593826952764256773, 85443499990582824984241143043808813] |