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| n | a(n) |
|---|---|
| 1 | 5 |
| 2 | 47 |
| 3 | 430 |
| 4 | 3966 |
| 5 | 36640 |
| 6 | 338581 |
| 7 | 3128843 |
| 8 | 28913910 |
| 9 | 267196106 |
| 10 | 2469184016 |
| 11 | 22817958901 |
| 12 | 210862878471 |
| 13 | 1948603453870 |
| 14 | 18007225586854 |
| 15 | 166406444930000 |
| 16 | 1537777420552101 |
| 17 | 14210744037917219 |
| 18 | 131322806156626838 |
[5,47,430,3966,36640,338581,3128843,28913910, 267196106,2469184016,22817958901,210862878471, 1948603453870,18007225586854,166406444930000, 1537777420552101,14210744037917219, 131322806156626838] |