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| n | a(n) |
|---|---|
| 1 | 32 |
| 2 | 45 |
| 3 | 270 |
| 4 | 1580 |
| 5 | 10732 |
| 6 | 75405 |
| 7 | 508181 |
| 8 | 3446847 |
| 9 | 23624322 |
| 10 | 161229670 |
| 11 | 1098816831 |
| 12 | 7502653827 |
| 13 | 51215288080 |
| 14 | 349470796318 |
| 15 | 2385134752139 |
| 16 | 16279122880898 |
| 17 | 111101831408560 |
| 18 | 758256658747120 |
| 19 | 5175081010159005 |
| 20 | 35319539304845840 |
[32,45,270,1580,10732,75405,508181,3446847, 23624322,161229670,1098816831,7502653827, 51215288080,349470796318,2385134752139, 16279122880898,111101831408560,758256658747120, 5175081010159005,35319539304845840] |