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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 5 |
| 4 | 14 |
| 5 | 42 |
| 6 | 132 |
| 7 | 429 |
| 8 | 1430 |
| 9 | 4862 |
| 10 | 16795 |
| 11 | 1 |
| 12 | 58783 |
| 13 | 3 |
| 14 | 208002 |
| 15 | 10 |
| 16 | 742865 |
| 17 | 35 |
| 18 | 2674314 |
| 19 | 126 |
| 20 | 9694383 |
| 21 | 462 |
| 22 | 35355954 |
| 23 | 1716 |
| 24 | 129638355 |
| 25 | 6435 |
| 26 | 477614390 |
| 27 | 24310 |
| 28 | 1767170813 |
| 29 | 92376 |
| 30 | 1 |
| 31 | 6563767708 |
| 32 | 352708 |
| 33 | 4 |
| 34 | 24464914958 |
| 35 | 1352046 |
| 36 | 16 |
| 37 | 91477363405 |
| 38 | 5200170 |
| 39 | 65 |
[1,1,2,5,14,42,132,429,1430,4862,16795,1,58783,3, 208002,10,742865,35,2674314,126,9694383,462, 35355954,1716,129638355,6435,477614390,24310, 1767170813,92376,1,6563767708,352708,4, 24464914958,1352046,16,91477363405,5200170,65] |