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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 1 |
| 3 | 10 |
| 4 | 7 |
| 5 | 94 |
| 6 | 59 |
| 7 | 1246 |
| 8 | 833 |
| 9 | 21602 |
| 10 | 14105 |
| 11 | 460250 |
| 12 | 305095 |
| 13 | 11656190 |
| 14 | 7689955 |
| 15 | 341753230 |
| 16 | 226403905 |
| 17 | 11388911170 |
| 18 | 7540044785 |
| 19 | 425080891690 |
| 20 | 281820040775 |
| 21 | 17566875749150 |
| 22 | 11648654892875 |
| 23 | 796239842748350 |
| 24 | 528320780212225 |
[1,2,1,10,7,94,59,1246,833,21602,14105,460250, 305095,11656190,7689955,341753230,226403905, 11388911170,7540044785,425080891690,281820040775, 17566875749150,11648654892875,796239842748350, 528320780212225] |