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| n | a(n) |
|---|---|
| 1 | 774 |
| 2 | 3040 |
| 3 | 11622 |
| 4 | 51026 |
| 5 | 218602 |
| 6 | 1058618 |
| 7 | 4923910 |
| 8 | 25667010 |
| 9 | 126489782 |
| 10 | 690800294 |
| 11 | 3533497602 |
| 12 | 19797058950 |
| 13 | 103613461346 |
| 14 | 587718236894 |
| 15 | 3119919914130 |
| 16 | 17784977065082 |
| 17 | 95276354415258 |
| 18 | 543743313418490 |
[774,3040,11622,51026,218602,1058618,4923910, 25667010,126489782,690800294,3533497602, 19797058950,103613461346,587718236894, 3119919914130,17784977065082,95276354415258, 543743313418490] |