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| n | a(n) |
|---|---|
| 1 | 22 |
| 2 | 140 |
| 3 | 1397 |
| 4 | 3174 |
| 5 | 11585 |
| 6 | 102978 |
| 7 | 1098758 |
| 8 | 1342070 |
| 9 | 2761448 |
| 10 | 116348986 |
| 11 | 326908123 |
| 12 | 5661454305 |
| 13 | 14439547606 |
| 14 | 24195364585 |
| 15 | 44988513611 |
| 16 | 1037782490126 |
| 17 | 18907836782131 |
| 18 | 50577039498042 |
| 19 | 476237361126871 |
| 20 | 10815891488601655 |
[22,140,1397,3174,11585,102978,1098758,1342070, 2761448,116348986,326908123,5661454305, 14439547606,24195364585,44988513611,1037782490126, 18907836782131,50577039498042,476237361126871, 10815891488601655] |