n | a(n) |
---|---|
0 | 1 |
1 | 9 |
2 | 53 |
3 | 309 |
4 | 1801 |
5 | 10497 |
6 | 61181 |
7 | 356589 |
8 | 2078353 |
9 | 12113529 |
10 | 70602821 |
11 | 411503397 |
12 | 2398417561 |
13 | 13979001969 |
14 | 81475594253 |
15 | 474874563549 |
16 | 2767771787041 |
17 | 16131756158697 |
18 | 94022765165141 |
19 | 548004834832149 |
20 | 3194006243827753 |
21 | 18616032628134369 |
22 | 108502189524978461 |
[1,9,53,309,1801,10497,61181,356589,2078353, 12113529,70602821,411503397,2398417561, 13979001969,81475594253,474874563549, 2767771787041,16131756158697,94022765165141, 548004834832149,3194006243827753, 18616032628134369,108502189524978461] |