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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 41 |
| 2 | 61 |
| 3 | 881 |
| 4 | 2101 |
| 5 | 19721 |
| 6 | 61741 |
| 7 | 456161 |
| 8 | 1690981 |
| 9 | 10814201 |
| 10 | 44633821 |
| 11 | 260917841 |
| 12 | 1153594261 |
| 13 | 6371951081 |
| 14 | 29443836301 |
| 15 | 156882857921 |
| 16 | 745759583941 |
| 17 | 3883416742361 |
| 18 | 18798608421181 |
| 19 | 96466943268401 |
| 20 | 472439111692021 |
| 21 | 2401777977060041 |
| 22 | 11850560210900461 |
| 23 | 59886119752101281 |
| 24 | 296897323970110501 |
[1,41,61,881,2101,19721,61741,456161,1690981, 10814201,44633821,260917841,1153594261,6371951081, 29443836301,156882857921,745759583941, 3883416742361,18798608421181,96466943268401, 472439111692021,2401777977060041, 11850560210900461,59886119752101281, 296897323970110501] |