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| n | a(n) |
|---|---|
| 0 | 429 |
| 1 | 1001 |
| 2 | 3003 |
| 3 | 9646 |
| 4 | 32123 |
| 5 | 109550 |
| 6 | 380162 |
| 7 | 1337220 |
| 8 | 4755402 |
| 9 | 17065365 |
| 10 | 61714147 |
| 11 | 224661206 |
| 12 | 822574599 |
| 13 | 3027096930 |
| 14 | 11190101910 |
| 15 | 41532876060 |
| 16 | 154712622870 |
| 17 | 578210935770 |
| 18 | 2167431271614 |
| 19 | 8146882131276 |
[429,1001,3003,9646,32123,109550,380162,1337220, 4755402,17065365,61714147,224661206,822574599, 3027096930,11190101910,41532876060,154712622870, 578210935770,2167431271614,8146882131276] |