n | a(n) |
---|---|
0 | 12 |
1 | 67 |
2 | 397 |
3 | 2377 |
4 | 14257 |
5 | 85537 |
6 | 513217 |
7 | 3079297 |
8 | 18475777 |
9 | 110854657 |
10 | 665127937 |
11 | 3990767617 |
12 | 23944605697 |
13 | 143667634177 |
14 | 862005805057 |
15 | 5172034830337 |
16 | 31032208982017 |
17 | 186193253892097 |
18 | 1117159523352577 |
19 | 6702957140115457 |
20 | 40217742840692737 |
[12,67,397,2377,14257,85537,513217,3079297, 18475777,110854657,665127937,3990767617, 23944605697,143667634177,862005805057, 5172034830337,31032208982017,186193253892097, 1117159523352577,6702957140115457, 40217742840692737] |