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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 5 |
| 3 | 73 |
| 4 | 2169 |
| 5 | 108901 |
| 6 | 8288293 |
| 7 | 890380177 |
| 8 | 128364028145 |
| 9 | 23918924529901 |
| 10 | 5595490598128221 |
| 11 | 1605718043992482553 |
| 12 | 554663179293965398825 |
| 13 | 227038711419826844827381 |
| 14 | 108674023653792712066606229 |
| 15 | 60142879347501714200454327841 |
| 16 | 38108071228342727619600464659425 |
[1,1,5,73,2169,108901,8288293,890380177, 128364028145,23918924529901,5595490598128221, 1605718043992482553,554663179293965398825, 227038711419826844827381, 108674023653792712066606229, 60142879347501714200454327841, 38108071228342727619600464659425] |