n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 7 |
4 | 22 |
5 | 66 |
6 | 227 |
7 | 768 |
8 | 2753 |
9 | 9971 |
10 | 37279 |
11 | 140691 |
12 | 540745 |
13 | 2103349 |
14 | 8280868 |
15 | 32903529 |
16 | 131904514 |
17 | 533181995 |
18 | 2170444180 |
19 | 8892860703 |
20 | 36646858917 |
21 | 151866209400 |
22 | 632446821837 |
23 | 2645948283877 |
24 | 11116175518696 |
25 | 46888154457285 |
26 | 198501876181794 |
27 | 843238066609291 |
28 | 3593501683668228 |
[1,1,3,7,22,66,227,768,2753,9971,37279,140691, 540745,2103349,8280868,32903529,131904514, 533181995,2170444180,8892860703,36646858917, 151866209400,632446821837,2645948283877, 11116175518696,46888154457285,198501876181794, 843238066609291,3593501683668228] |