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| n | a(n) |
|---|---|
| 1 | 35 |
| 2 | 273 |
| 3 | 2130 |
| 4 | 16620 |
| 5 | 129684 |
| 6 | 1011912 |
| 7 | 7895856 |
| 8 | 61610640 |
| 9 | 480742176 |
| 10 | 3751187136 |
| 11 | 29270169408 |
| 12 | 228392449152 |
| 13 | 1782125347584 |
| 14 | 13905760747776 |
| 15 | 108505376592384 |
| 16 | 846657508568064 |
| 17 | 6606390939571200 |
| 18 | 51549062997460992 |
| 19 | 402232613876871168 |
[35,273,2130,16620,129684,1011912,7895856, 61610640,480742176,3751187136,29270169408, 228392449152,1782125347584,13905760747776, 108505376592384,846657508568064,6606390939571200, 51549062997460992,402232613876871168] |