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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 8 |
| 2 | 385 |
| 3 | 3088 |
| 4 | 148609 |
| 5 | 1191960 |
| 6 | 57362689 |
| 7 | 460093472 |
| 8 | 22141849345 |
| 9 | 177594888232 |
| 10 | 8546696484481 |
| 11 | 68551166764080 |
| 12 | 3299002701160321 |
| 13 | 26460572776046648 |
| 14 | 1273406495951399425 |
| 15 | 10213712540387242048 |
| 16 | 491531608434539017729 |
| 17 | 3942466580016699383880 |
[1,8,385,3088,148609,1191960,57362689,460093472, 22141849345,177594888232,8546696484481, 68551166764080,3299002701160321,26460572776046648, 1273406495951399425,10213712540387242048, 491531608434539017729,3942466580016699383880] |