n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 1 |
4 | 2 |
5 | 4 |
6 | 7 |
7 | 12 |
8 | 22 |
9 | 39 |
10 | 70 |
11 | 126 |
12 | 225 |
13 | 404 |
14 | 725 |
15 | 1299 |
16 | 2331 |
17 | 4182 |
18 | 7501 |
19 | 13458 |
20 | 24145 |
21 | 43316 |
22 | 77715 |
23 | 139430 |
24 | 250152 |
25 | 448808 |
26 | 805222 |
27 | 1444677 |
28 | 2591958 |
29 | 4650342 |
30 | 8343380 |
31 | 14969239 |
32 | 26856992 |
33 | 48185362 |
34 | 86451602 |
35 | 155106844 |
36 | 278284440 |
37 | 499283177 |
38 | 895787396 |
39 | 1607174300 |
40 | 2883507098 |
[0,1,1,2,4,7,12,22,39,70,126,225,404,725,1299, 2331,4182,7501,13458,24145,43316,77715,139430, 250152,448808,805222,1444677,2591958,4650342, 8343380,14969239,26856992,48185362,86451602, 155106844,278284440,499283177,895787396, 1607174300,2883507098] |