n | a(n) |
---|---|
1 | 1 |
2 | 7 |
3 | 26 |
4 | 85 |
5 | 264 |
6 | 803 |
7 | 2422 |
8 | 7281 |
9 | 21860 |
10 | 65599 |
11 | 196818 |
12 | 590477 |
13 | 1771456 |
14 | 5314395 |
15 | 15943214 |
16 | 47829673 |
17 | 143489052 |
18 | 430467191 |
19 | 1291401610 |
20 | 3874204869 |
21 | 11622614648 |
22 | 34867843987 |
23 | 104603532006 |
24 | 313810596065 |
25 | 941431788244 |
26 | 2824295364783 |
27 | 8472886094402 |
[1,7,26,85,264,803,2422,7281,21860,65599,196818, 590477,1771456,5314395,15943214,47829673, 143489052,430467191,1291401610,3874204869, 11622614648,34867843987,104603532006,313810596065, 941431788244,2824295364783,8472886094402] |