n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 6 |
3 | 15 |
4 | 37 |
5 | 94 |
6 | 241 |
7 | 623 |
8 | 1618 |
9 | 4215 |
10 | 11001 |
11 | 28746 |
12 | 75169 |
13 | 196651 |
14 | 514606 |
15 | 1346879 |
16 | 3525565 |
17 | 9229062 |
18 | 24160401 |
19 | 63250167 |
20 | 165586906 |
21 | 433505383 |
22 | 1134920881 |
23 | 2971243730 |
24 | 7778788417 |
25 | 20365086099 |
26 | 53316412566 |
27 | 139584058863 |
[1,3,6,15,37,94,241,623,1618,4215,11001,28746, 75169,196651,514606,1346879,3525565,9229062, 24160401,63250167,165586906,433505383,1134920881, 2971243730,7778788417,20365086099,53316412566, 139584058863] |