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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 5 |
| 5 | 33 |
| 6 | 1214 |
| 7 | 1509733 |
| 8 | 2281082919633 |
| 9 | 5203342727366374356990526 |
| 10 | 27074775538448408469117040958804384971249439965813 |
| 11 | 733043470457364306745565389055274337169526356099299839341244874661931850021760795731279812250002545 |
[1,1,2,5,33,1214,1509733,2281082919633, 5203342727366374356990526, 27074775538448408469117040958804384971249439965813\ , 73304347045736430674556538905527433716952635609929\ 9839341244874661931850021760795731279812250002545] |