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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 6 |
| 4 | 23 |
| 5 | 1 |
| 6 | 110 |
| 7 | 10 |
| 8 | 631 |
| 9 | 88 |
| 10 | 1 |
| 11 | 4223 |
| 12 | 794 |
| 13 | 23 |
| 14 | 32301 |
| 15 | 7639 |
| 16 | 379 |
| 17 | 1 |
| 18 | 277962 |
| 19 | 79164 |
| 20 | 5706 |
| 21 | 48 |
| 22 | 2657797 |
| 23 | 885128 |
| 24 | 84354 |
| 25 | 1520 |
| 26 | 1 |
| 27 | 27954521 |
| 28 | 10657588 |
| 29 | 1266150 |
| 30 | 38452 |
| 31 | 89 |
| 32 | 320752991 |
| 33 | 137752283 |
| 34 | 19621124 |
| 35 | 869740 |
| 36 | 5461 |
| 37 | 1 |
| 38 | 3987045780 |
| 39 | 1904555934 |
| 40 | 316459848 |
[1,1,2,6,23,1,110,10,631,88,1,4223,794,23,32301, 7639,379,1,277962,79164,5706,48,2657797,885128, 84354,1520,1,27954521,10657588,1266150,38452,89, 320752991,137752283,19621124,869740,5461,1, 3987045780,1904555934,316459848] |