n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 4 |
3 | 10 |
4 | 24 |
5 | 50 |
6 | 140 |
7 | 368 |
8 | 1152 |
9 | 3682 |
10 | 11784 |
11 | 39902 |
12 | 134612 |
13 | 463066 |
14 | 1635092 |
15 | 5818384 |
16 | 20684072 |
17 | 73693068 |
18 | 266943648 |
19 | 967762792 |
20 | 3533666568 |
21 | 13036452946 |
22 | 48102671884 |
23 | 178315730764 |
24 | 661567489568 |
25 | 2450447537226 |
26 | 9123572154720 |
27 | 34201574126260 |
[1,2,4,10,24,50,140,368,1152,3682,11784,39902, 134612,463066,1635092,5818384,20684072,73693068, 266943648,967762792,3533666568,13036452946, 48102671884,178315730764,661567489568, 2450447537226,9123572154720,34201574126260] |