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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 5 |
| 2 | 35 |
| 3 | 610 |
| 4 | 19455 |
| 5 | 886126 |
| 6 | 51256460 |
| 7 | 3547342545 |
| 8 | 283841669495 |
| 9 | 25689974114785 |
| 10 | 2590438823559751 |
| 11 | 287755717118442960 |
| 12 | 34906792324639545345 |
| 13 | 4591374110875921928770 |
| 14 | 650935065832755644508135 |
| 15 | 98965182089496736423674254 |
| 16 | 16063900800630675693846054095 |
| 17 | 2772975952788175401479179760640 |
| 18 | 507291948247657812718949908038315 |
[1,5,35,610,19455,886126,51256460,3547342545, 283841669495,25689974114785,2590438823559751, 287755717118442960,34906792324639545345, 4591374110875921928770,650935065832755644508135, 98965182089496736423674254, 16063900800630675693846054095, 2772975952788175401479179760640, 507291948247657812718949908038315] |