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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 10 |
| 2 | 137 |
| 3 | 2174 |
| 4 | 37562 |
| 5 | 686004 |
| 6 | 13027065 |
| 7 | 254641398 |
| 8 | 5089756958 |
| 9 | 103552330700 |
| 10 | 2137385941418 |
| 11 | 44647634773420 |
| 12 | 942085264713556 |
| 13 | 20050276273007080 |
| 14 | 429913404536172633 |
| 15 | 9278142975370425510 |
| 16 | 201383222768034837750 |
| 17 | 4393265621094818733660 |
[1,10,137,2174,37562,686004,13027065,254641398, 5089756958,103552330700,2137385941418, 44647634773420,942085264713556,20050276273007080, 429913404536172633,9278142975370425510, 201383222768034837750,4393265621094818733660] |