n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 9 |
4 | 39 |
5 | 249 |
6 | 2559 |
7 | 5559 |
8 | 516069 |
9 | 10215759 |
10 | 233308629 |
11 | 6703001859 |
12 | 207263491989 |
13 | 7628001626799 |
14 | 311878265154009 |
15 | 13394639596824039 |
16 | 628284422185315449 |
17 | 33217442899375360179 |
18 | 1955977793053587999249 |
[1,3,9,39,249,2559,5559,516069,10215759,233308629, 6703001859,207263491989,7628001626799, 311878265154009,13394639596824039, 628284422185315449,33217442899375360179, 1955977793053587999249] |