n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 4 |
4 | 10 |
5 | 25 |
6 | 65 |
7 | 169 |
8 | 442 |
9 | 1156 |
10 | 3026 |
11 | 7921 |
12 | 20737 |
13 | 54289 |
14 | 142130 |
15 | 372100 |
16 | 974170 |
17 | 2550409 |
18 | 6677057 |
19 | 17480761 |
20 | 45765226 |
21 | 119814916 |
22 | 313679522 |
23 | 821223649 |
24 | 2149991425 |
25 | 5628750625 |
26 | 14736260450 |
27 | 38580030724 |
28 | 101003831722 |
[1,1,2,4,10,25,65,169,442,1156,3026,7921,20737, 54289,142130,372100,974170,2550409,6677057, 17480761,45765226,119814916,313679522,821223649, 2149991425,5628750625,14736260450,38580030724, 101003831722] |