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| n | a(n) |
|---|---|
| 1 | 13665 |
| 2 | 69612 |
| 3 | 367595 |
| 4 | 1728140 |
| 5 | 7508980 |
| 6 | 29840078 |
| 7 | 108633030 |
| 8 | 365326803 |
| 9 | 1143413488 |
| 10 | 3354616070 |
| 11 | 9280999295 |
| 12 | 24345047529 |
| 13 | 60836152145 |
| 14 | 145450899834 |
| 15 | 333992270229 |
| 16 | 739111273479 |
| 17 | 1581104447457 |
| 18 | 3278467967427 |
| 19 | 6605334975638 |
[13665,69612,367595,1728140,7508980,29840078, 108633030,365326803,1143413488,3354616070, 9280999295,24345047529,60836152145,145450899834, 333992270229,739111273479,1581104447457, 3278467967427,6605334975638] |