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| n | a(n) |
|---|---|
| 1 | 128 |
| 2 | 3113 |
| 3 | 30780 |
| 4 | 177421 |
| 5 | 744564 |
| 6 | 2457921 |
| 7 | 6924692 |
| 8 | 17094253 |
| 9 | 38304880 |
| 10 | 78984989 |
| 11 | 152812848 |
| 12 | 279129849 |
| 13 | 487306780 |
| 14 | 816235605 |
| 15 | 1321428708 |
| 16 | 2073455817 |
[128,3113,30780,177421,744564,2457921,6924692, 17094253,38304880,78984989,152812848,279129849, 487306780,816235605,1321428708,2073455817] |