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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 2 |
| 4 | 3 |
| 5 | 20 |
| 6 | 5 |
| 7 | 70 |
| 8 | 53 |
| 9 | 121 |
| 10 | 87 |
| 11 | 330 |
| 12 | 117 |
| 13 | 572 |
| 14 | 305 |
| 15 | 507 |
| 16 | 553 |
| 17 | 1360 |
| 18 | 481 |
| 19 | 1938 |
| 20 | 873 |
| 21 | 1586 |
| 22 | 1405 |
| 23 | 3542 |
| 24 | 1241 |
| 25 | 3846 |
| 26 | 2415 |
| 27 | 4006 |
| 28 | 2765 |
| 29 | 7308 |
| 30 | 1875 |
| 31 | 8990 |
| 32 | 4945 |
| 33 | 6828 |
| 34 | 5675 |
| 35 | 9333 |
| 36 | 4525 |
| 37 | 15540 |
| 38 | 8053 |
| 39 | 11567 |
| 40 | 7745 |
| 41 | 21320 |
| 42 | 6047 |
| 43 | 24682 |
| 44 | 12005 |
| 45 | 15244 |
| 46 | 14625 |
[0,0,2,3,20,5,70,53,121,87,330,117,572,305,507, 553,1360,481,1938,873,1586,1405,3542,1241,3846, 2415,4006,2765,7308,1875,8990,4945,6828,5675,9333, 4525,15540,8053,11567,7745,21320,6047,24682,12005, 15244,14625] |