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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 39 |
| 4 | 507 |
| 5 | 6591 |
| 6 | 12207 |
| 7 | 85683 |
| 8 | 158691 |
| 9 | 255567 |
| 10 | 285987 |
| 11 | 1028703 |
| 12 | 1113879 |
| 13 | 2062983 |
| 14 | 3322371 |
| 15 | 3717831 |
| 16 | 3820791 |
| 17 | 13373139 |
| 18 | 14480427 |
| 19 | 26818779 |
| 20 | 31089279 |
| 21 | 43190823 |
| 22 | 48331803 |
| 23 | 49670283 |
| 24 | 79992471 |
| 25 | 89513931 |
| 26 | 173850807 |
| 27 | 188245551 |
| 28 | 321984039 |
| 29 | 348644127 |
| 30 | 404160627 |
| 31 | 561480699 |
| 32 | 628313439 |
| 33 | 645713679 |
[1,3,39,507,6591,12207,85683,158691,255567,285987, 1028703,1113879,2062983,3322371,3717831,3820791, 13373139,14480427,26818779,31089279,43190823, 48331803,49670283,79992471,89513931,173850807, 188245551,321984039,348644127,404160627,561480699, 628313439,645713679] |