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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 5 |
| 3 | 21 |
| 4 | 169 |
| 5 | 2705 |
| 6 | 86561 |
| 7 | 5539905 |
| 8 | 709107841 |
| 9 | 181531607297 |
| 10 | 92944182936065 |
| 11 | 95174843326530561 |
| 12 | 194918079132734588929 |
| 13 | 798384452127680876253185 |
| 14 | 6540365431829961738266091521 |
| 15 | 107157347235102093119751643480065 |
| 16 | 3511331954199825387348021853554769921 |
[1,2,5,21,169,2705,86561,5539905,709107841, 181531607297,92944182936065,95174843326530561, 194918079132734588929,798384452127680876253185, 6540365431829961738266091521, 107157347235102093119751643480065, 3511331954199825387348021853554769921] |