n | a(n) |
---|---|
1 | 11 |
2 | 53 |
3 | 173 |
4 | 521 |
5 | 1523 |
6 | 4327 |
7 | 11579 |
8 | 31469 |
9 | 85411 |
10 | 229547 |
11 | 614477 |
12 | 1640461 |
13 | 4393369 |
14 | 11806297 |
15 | 31656553 |
16 | 84979847 |
17 | 228346229 |
18 | 614582509 |
19 | 1654328267 |
20 | 4457160931 |
21 | 12016414601 |
22 | 32419200013 |
23 | 87508870037 |
24 | 236325429049 |
25 | 638490906857 |
26 | 1725782162981 |
27 | 4666340800001 |
[11,53,173,521,1523,4327,11579,31469,85411,229547, 614477,1640461,4393369,11806297,31656553,84979847, 228346229,614582509,1654328267,4457160931, 12016414601,32419200013,87508870037,236325429049, 638490906857,1725782162981,4666340800001] |