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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 5 |
| 3 | 36 |
| 4 | 610 |
| 5 | 13225 |
| 6 | 1173652 |
| 7 | 92137513 |
| 8 | 27960729094 |
| 9 | 14612913824364 |
| 10 | 11885159817456154 |
| 11 | 23676862215173960082 |
| 12 | 144210774157588042096815 |
| 13 | 778807208565930895328294712 |
| 14 | 15863318347221014170216633451982 |
| 15 | 908978343753718115412387406378667615 |
[1,1,5,36,610,13225,1173652,92137513,27960729094, 14612913824364,11885159817456154, 23676862215173960082,144210774157588042096815, 778807208565930895328294712, 15863318347221014170216633451982, 908978343753718115412387406378667615] |