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| n | a(n) |
|---|---|
| 3 | 1 |
| 4 | 19 |
| 5 | 916 |
| 6 | 91212 |
| 7 | 12888450 |
| 8 | 2411213698 |
| 9 | 575737451509 |
| 10 | 171049953499862 |
| 11 | 61944438230597774 |
| 12 | 26879022100485977540 |
| 13 | 13773587720396658214925 |
| 14 | 8231894671550187551622795 |
| 15 | 5676740663627528580559535893 |
| 16 | 4474748487205893704072253926113 |
[1,19,916,91212,12888450,2411213698,575737451509, 171049953499862,61944438230597774, 26879022100485977540,13773587720396658214925, 8231894671550187551622795, 5676740663627528580559535893, 4474748487205893704072253926113] |