n | a(n) |
---|---|
0 | 1 |
1 | 15 |
2 | 69 |
3 | 325 |
4 | 1543 |
5 | 7361 |
6 | 35223 |
7 | 168899 |
8 | 811105 |
9 | 3899407 |
10 | 18761375 |
11 | 90319881 |
12 | 434998065 |
13 | 2095690739 |
14 | 10098729091 |
15 | 48672013183 |
16 | 234609419433 |
17 | 1130969299775 |
18 | 5452365150693 |
19 | 26286944474683 |
20 | 126739125460983 |
[1,15,69,325,1543,7361,35223,168899,811105, 3899407,18761375,90319881,434998065,2095690739, 10098729091,48672013183,234609419433, 1130969299775,5452365150693,26286944474683, 126739125460983] |