n | a(n) |
---|---|
1 | 1 |
2 | 15 |
3 | 209 |
4 | 2911 |
5 | 40545 |
6 | 564719 |
7 | 7865521 |
8 | 109552575 |
9 | 1525870529 |
10 | 21252634831 |
11 | 296011017105 |
12 | 4122901604639 |
13 | 57424611447841 |
14 | 799821658665135 |
15 | 11140078609864049 |
16 | 155161278879431551 |
17 | 2161117825702177665 |
18 | 30100488280951055759 |
19 | 419245718107612602961 |
20 | 5839339565225625385695 |
[1,15,209,2911,40545,564719,7865521,109552575, 1525870529,21252634831,296011017105,4122901604639, 57424611447841,799821658665135,11140078609864049, 155161278879431551,2161117825702177665, 30100488280951055759,419245718107612602961, 5839339565225625385695] |