n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 5 |
3 | 12 |
4 | 31 |
5 | 80 |
6 | 209 |
7 | 546 |
8 | 1429 |
9 | 3740 |
10 | 9791 |
11 | 25632 |
12 | 67105 |
13 | 175682 |
14 | 459941 |
15 | 1204140 |
16 | 3152479 |
17 | 8253296 |
18 | 21607409 |
19 | 56568930 |
20 | 148099381 |
21 | 387729212 |
22 | 1015088255 |
23 | 2657535552 |
24 | 6957518401 |
25 | 18215019650 |
26 | 47687540549 |
27 | 124847601996 |
[1,2,5,12,31,80,209,546,1429,3740,9791,25632, 67105,175682,459941,1204140,3152479,8253296, 21607409,56568930,148099381,387729212,1015088255, 2657535552,6957518401,18215019650,47687540549, 124847601996] |