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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 702 |
| 3 | 191 |
| 4 | 5563 |
| 5 | 4619 |
| 6 | 55382 |
| 7 | 99205 |
| 8 | 713542 |
| 9 | 1964803 |
| 10 | 10454428 |
| 11 | 36456925 |
| 12 | 170495722 |
| 13 | 667372121 |
| 14 | 2966797695 |
| 15 | 12357633485 |
| 16 | 53847703784 |
| 17 | 232236213151 |
| 18 | 1006212092360 |
| 19 | 4425027446469 |
| 20 | 19184005184192 |
| 21 | 85271913119853 |
[0,702,191,5563,4619,55382,99205,713542,1964803, 10454428,36456925,170495722,667372121,2966797695, 12357633485,53847703784,232236213151, 1006212092360,4425027446469,19184005184192, 85271913119853] |