n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 3 |
3 | 11 |
4 | 41 |
5 | 155 |
6 | 591 |
7 | 2267 |
8 | 8735 |
9 | 33775 |
10 | 130965 |
11 | 509015 |
12 | 1982269 |
13 | 7732659 |
14 | 30208749 |
15 | 118167055 |
16 | 462760369 |
17 | 1814091011 |
18 | 7118044023 |
19 | 27952660883 |
20 | 109853552255 |
21 | 432021606103 |
22 | 1700093447847 |
23 | 6694137523051 |
24 | 26372544576331 |
25 | 103950885100775 |
26 | 409928481296331 |
[0,1,3,11,41,155,591,2267,8735,33775,130965, 509015,1982269,7732659,30208749,118167055, 462760369,1814091011,7118044023,27952660883, 109853552255,432021606103,1700093447847, 6694137523051,26372544576331,103950885100775, 409928481296331] |