n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 9 |
3 | 45 |
4 | 249 |
5 | 1373 |
6 | 9177 |
7 | 62257 |
8 | 453179 |
9 | 3320531 |
10 | 24087877 |
11 | 183643865 |
12 | 1394580343 |
13 | 10794949627 |
14 | 85730722969 |
15 | 686171829489 |
16 | 5487361175591 |
17 | 43981108061647 |
18 | 358362244544957 |
19 | 2922625435214613 |
20 | 24006575088945973 |
21 | 199229783030494775 |
22 | 1653790732247194785 |
[1,3,9,45,249,1373,9177,62257,453179,3320531, 24087877,183643865,1394580343,10794949627, 85730722969,686171829489,5487361175591, 43981108061647,358362244544957,2922625435214613, 24006575088945973,199229783030494775, 1653790732247194785] |