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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 21 |
| 3 | 119 |
| 4 | 329 |
| 5 | 339 |
| 6 | 1533 |
| 7 | 2031 |
| 8 | 67857 |
| 9 | 68491 |
| 10 | 1472837 |
| 11 | 7105255 |
| 12 | 20933977 |
| 13 | 91061443 |
| 14 | 344607757 |
| 15 | 137379807 |
| 16 | 942687265 |
| 17 | 22093239035 |
| 18 | 115763405909 |
| 19 | 23058549975 |
| 20 | 581930881897 |
| 21 | 8126485230643 |
| 22 | 18131637168157 |
| 23 | 69459897210831 |
| 24 | 12202023051569 |
| 25 | 1785877136688747 |
| 26 | 4676672234192229 |
| 27 | 4337085752026823 |
| 28 | 51543753266508665 |
| 29 | 431102794881380259 |
| 30 | 338696479165696557 |
[1,3,21,119,329,339,1533,2031,67857,68491,1472837, 7105255,20933977,91061443,344607757,137379807, 942687265,22093239035,115763405909,23058549975, 581930881897,8126485230643,18131637168157, 69459897210831,12202023051569,1785877136688747, 4676672234192229,4337085752026823, 51543753266508665,431102794881380259, 338696479165696557] |