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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 10 |
| 4 | 92 |
| 5 | 1351 |
| 6 | 28982 |
| 7 | 855100 |
| 8 | 33214232 |
| 9 | 1642999501 |
| 10 | 100843185962 |
| 11 | 7520379392890 |
| 12 | 669760178257172 |
| 13 | 70211429619908851 |
| 14 | 8558006664633638942 |
| 15 | 1200128210993564085880 |
| 16 | 191861070874818576596912 |
| 17 | 34685967730611200643509401 |
| 18 | 7041037426518318365605795922 |
[1,2,10,92,1351,28982,855100,33214232,1642999501, 100843185962,7520379392890,669760178257172, 70211429619908851,8558006664633638942, 1200128210993564085880,191861070874818576596912, 34685967730611200643509401, 7041037426518318365605795922] |