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| n | a(n) |
|---|---|
| 1 | 442 |
| 2 | 11519 |
| 3 | 117828 |
| 4 | 706561 |
| 5 | 3032302 |
| 6 | 10361063 |
| 7 | 30011560 |
| 8 | 76692849 |
| 9 | 177624322 |
| 10 | 380016703 |
| 11 | 761591084 |
| 12 | 1444917201 |
| 13 | 2616462070 |
| 14 | 4551355783 |
| 15 | 7645002704 |
| 16 | 12452793505 |
| 17 | 19739306442 |
| 18 | 30538524991 |
| 19 | 46226743444 |
| 20 | 68609982305 |
[442,11519,117828,706561,3032302,10361063, 30011560,76692849,177624322,380016703,761591084, 1444917201,2616462070,4551355783,7645002704, 12452793505,19739306442,30538524991,46226743444, 68609982305] |