n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 2 |
4 | 4 |
5 | 10 |
6 | 26 |
7 | 76 |
8 | 232 |
9 | 750 |
10 | 2494 |
11 | 8524 |
12 | 29624 |
13 | 104468 |
14 | 372308 |
15 | 1338936 |
16 | 4850640 |
17 | 17685270 |
18 | 64834550 |
19 | 238843660 |
20 | 883677784 |
21 | 3282152588 |
22 | 12233309868 |
23 | 45741634536 |
24 | 171530482864 |
25 | 644953425740 |
26 | 2430975800876 |
27 | 9183681736376 |
28 | 34766785487152 |
29 | 131873995933480 |
[1,1,2,4,10,26,76,232,750,2494,8524,29624,104468, 372308,1338936,4850640,17685270,64834550, 238843660,883677784,3282152588,12233309868, 45741634536,171530482864,644953425740, 2430975800876,9183681736376,34766785487152, 131873995933480] |