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| n | a(n) |
|---|---|
| 1 | 10 |
| 2 | 90 |
| 3 | 631 |
| 4 | 3567 |
| 5 | 16493 |
| 6 | 64018 |
| 7 | 213013 |
| 8 | 621757 |
| 9 | 1626046 |
| 10 | 3878550 |
| 11 | 8560638 |
| 12 | 17688966 |
| 13 | 34541082 |
| 14 | 64226182 |
| 15 | 114429139 |
| 16 | 196357695 |
| 17 | 325924563 |
| 18 | 525198174 |
| 19 | 824157734 |
| 20 | 1262790173 |
| 21 | 1893568514 |
| 22 | 2784353134 |
| 23 | 4021759333 |
| 24 | 5715036571 |
[10,90,631,3567,16493,64018,213013,621757,1626046, 3878550,8560638,17688966,34541082,64226182, 114429139,196357695,325924563,525198174,824157734, 1262790173,1893568514,2784353134,4021759333, 5715036571] |