| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 7 |
| 3 | 2 |
| 4 | 23 |
| 5 | 58 |
| 6 | 23 |
| 7 | 170 |
| 8 | 471 |
| 9 | 250 |
| 10 | 1303 |
| 11 | 3754 |
| 12 | 2007 |
| 13 | 10490 |
| 14 | 28951 |
| 15 | 9130 |
| 16 | 67031 |
| 17 | 149242 |
| 18 | 359703 |
| 19 | 690858 |
| 20 | 2062295 |
| 21 | 239866 |
| 22 | 7722263 |
| 23 | 4111274 |
| 24 | 21323223 |
| 25 | 60993274 |
| 26 | 18199831 |
| 27 | 168522410 |
| 28 | 479635415 |
| 29 | 195938554 |
| 30 | 1432024343 |
| 31 | 3971038122 |
| 32 | 1566727639 |
| 33 | 11455147770 |
[1,2,7,2,23,58,23,170,471,250,1303,3754,2007, 10490,28951,9130,67031,149242,359703,690858, 2062295,239866,7722263,4111274,21323223,60993274, 18199831,168522410,479635415,195938554,1432024343, 3971038122,1566727639,11455147770] |