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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 22 |
| 3 | 584 |
| 4 | 28384 |
| 5 | 2190128 |
| 6 | 245762848 |
| 7 | 37788392576 |
| 8 | 7625538720256 |
| 9 | 1954588198280192 |
| 10 | 620259836756837632 |
| 11 | 238698984906300222464 |
| 12 | 109521341941344601083904 |
| 13 | 59065100769855968517951488 |
| 14 | 36990397033719114096675954688 |
[1,2,22,584,28384,2190128,245762848,37788392576, 7625538720256,1954588198280192,620259836756837632, 238698984906300222464,109521341941344601083904, 59065100769855968517951488, 36990397033719114096675954688] |