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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 5 |
| 3 | 10 |
| 4 | 25 |
| 5 | 77 |
| 6 | 280 |
| 7 | 1157 |
| 8 | 5296 |
| 9 | 26406 |
| 10 | 141585 |
| 11 | 807064 |
| 12 | 4837587 |
| 13 | 30181075 |
| 14 | 194210670 |
| 15 | 1279159631 |
| 16 | 8571132698 |
| 17 | 58153599684 |
| 18 | 398124806735 |
| 19 | 2743173705258 |
| 20 | 18987825983429 |
| 21 | 131858977691833 |
| 22 | 917797527716980 |
| 23 | 6398758306106345 |
[3,5,10,25,77,280,1157,5296,26406,141585,807064, 4837587,30181075,194210670,1279159631,8571132698, 58153599684,398124806735,2743173705258, 18987825983429,131858977691833,917797527716980, 6398758306106345] |