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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 47 |
| 3 | 329 |
| 4 | 1750 |
| 5 | 10157 |
| 6 | 57249 |
| 7 | 326938 |
| 8 | 1871991 |
| 9 | 10717083 |
| 10 | 61406130 |
| 11 | 351621409 |
| 12 | 2013957691 |
| 13 | 11534261710 |
| 14 | 66064401075 |
| 15 | 378390334671 |
| 16 | 2167284760374 |
| 17 | 12413363760441 |
| 18 | 71098932771545 |
| 19 | 407227101232548 |
| 20 | 2332439882554127 |
[1,47,329,1750,10157,57249,326938,1871991, 10717083,61406130,351621409,2013957691, 11534261710,66064401075,378390334671, 2167284760374,12413363760441,71098932771545, 407227101232548,2332439882554127] |