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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 5 |
| 2 | 17 |
| 3 | 61 |
| 4 | 149 |
| 5 | 657 |
| 6 | 3269 |
| 7 | 12113 |
| 8 | 46357 |
| 9 | 187109 |
| 10 | 746961 |
| 11 | 2968257 |
| 12 | 11855809 |
| 13 | 47388061 |
| 14 | 189393409 |
| 15 | 757703897 |
[1,5,17,61,149,657,3269,12113,46357,187109,746961, 2968257,11855809,47388061,189393409,757703897] |