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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 10 |
| 2 | 130 |
| 3 | 2000 |
| 4 | 35054 |
| 5 | 684000 |
| 6 | 14628190 |
| 7 | 338990000 |
| 8 | 8438270014 |
| 9 | 224070580800 |
| 10 | 6311530677150 |
| 11 | 187702155610000 |
| 12 | 5870416574854974 |
| 13 | 192423935736656800 |
| 14 | 6591135679171866910 |
| 15 | 235315671951948070000 |
| 16 | 8736534653549465359934 |
[1,10,130,2000,35054,684000,14628190,338990000, 8438270014,224070580800,6311530677150, 187702155610000,5870416574854974, 192423935736656800,6591135679171866910, 235315671951948070000,8736534653549465359934] |