n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 15 |
3 | 87 |
4 | 503 |
5 | 2871 |
6 | 16311 |
7 | 92599 |
8 | 525751 |
9 | 2985399 |
10 | 16952759 |
11 | 96267703 |
12 | 546663863 |
13 | 3104271799 |
14 | 17627835831 |
15 | 100100959671 |
16 | 568430652855 |
17 | 3227875241399 |
18 | 18329726840247 |
19 | 104086701305271 |
20 | 591063984860599 |
[1,3,15,87,503,2871,16311,92599,525751,2985399, 16952759,96267703,546663863,3104271799, 17627835831,100100959671,568430652855, 3227875241399,18329726840247,104086701305271, 591063984860599] |