n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 8 |
4 | 26 |
5 | 86 |
6 | 300 |
7 | 1099 |
8 | 4065 |
9 | 15464 |
10 | 60126 |
11 | 235711 |
12 | 938916 |
13 | 3786566 |
14 | 15373560 |
15 | 63058702 |
16 | 260700178 |
17 | 1083632350 |
18 | 4536791630 |
19 | 19096536008 |
20 | 80737061523 |
21 | 343192967447 |
22 | 1464457668985 |
23 | 6271953873038 |
24 | 26975682913289 |
25 | 116353776657458 |
26 | 503418109852904 |
27 | 2185615416588541 |
28 | 9509539891579458 |
[1,1,3,8,26,86,300,1099,4065,15464,60126,235711, 938916,3786566,15373560,63058702,260700178, 1083632350,4536791630,19096536008,80737061523, 343192967447,1464457668985,6271953873038, 26975682913289,116353776657458,503418109852904, 2185615416588541,9509539891579458] |