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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 66 |
| 4 | 7 |
| 5 | 1 |
| 6 | 5 |
| 7 | 137 |
| 8 | 82 |
| 9 | 118 |
| 10 | 178 |
| 11 | 354 |
| 12 | 853 |
| 13 | 1574 |
| 14 | 3143 |
| 15 | 6240 |
| 16 | 11295 |
| 17 | 22586 |
| 18 | 46672 |
| 19 | 103020 |
| 20 | 212861 |
| 21 | 423225 |
| 22 | 875790 |
| 23 | 1853269 |
| 24 | 4033811 |
| 25 | 8686030 |
| 26 | 18595574 |
| 27 | 40704019 |
| 28 | 89768106 |
| 29 | 200052780 |
| 30 | 449679282 |
| 31 | 1015358749 |
| 32 | 2306160010 |
| 33 | 5269874673 |
[1,2,66,7,1,5,137,82,118,178,354,853,1574,3143, 6240,11295,22586,46672,103020,212861,423225, 875790,1853269,4033811,8686030,18595574,40704019, 89768106,200052780,449679282,1015358749, 2306160010,5269874673] |