n | a(n) |
---|---|
1 | 2 |
2 | 15 |
3 | 74 |
4 | 409 |
5 | 1951 |
6 | 9765 |
7 | 48827 |
8 | 256347 |
9 | 1220699 |
10 | 6103515 |
11 | 30517572 |
12 | 160216158 |
13 | 762939452 |
14 | 3814697265 |
15 | 19073486293 |
16 | 101327896117 |
17 | 476837158134 |
[2,15,74,409,1951,9765,48827,256347,1220699, 6103515,30517572,160216158,762939452,3814697265, 19073486293,101327896117,476837158134] |