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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 3 |
| 3 | 21 |
| 4 | 331 |
| 5 | 11973 |
| 6 | 1030091 |
| 7 | 218626341 |
| 8 | 118038692523 |
| 9 | 166013096151621 |
| 10 | 619176055256353291 |
| 11 | 6207997057962300681573 |
| 12 | 169117528577725378851523691 |
| 13 | 12626174170113987651028630856581 |
| 14 | 2602022118010488151483064379958957003 |
[1,1,3,21,331,11973,1030091,218626341, 118038692523,166013096151621,619176055256353291, 6207997057962300681573, 169117528577725378851523691, 12626174170113987651028630856581, 2602022118010488151483064379958957003] |