n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 7 |
3 | 28 |
4 | 122 |
5 | 562 |
6 | 2693 |
7 | 13288 |
8 | 67064 |
9 | 344588 |
10 | 1796518 |
11 | 9479780 |
12 | 50532640 |
13 | 271710662 |
14 | 1471935235 |
15 | 8026070768 |
16 | 44015873308 |
17 | 242619318848 |
18 | 1343427572648 |
19 | 7469219870968 |
20 | 41680871386016 |
21 | 233373274580372 |
22 | 1310659959443722 |
23 | 7381448319246248 |
24 | 41678055955034962 |
[1,2,7,28,122,562,2693,13288,67064,344588,1796518, 9479780,50532640,271710662,1471935235,8026070768, 44015873308,242619318848,1343427572648, 7469219870968,41680871386016,233373274580372, 1310659959443722,7381448319246248, 41678055955034962] |