n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 5 |
4 | 16 |
5 | 51 |
6 | 170 |
7 | 585 |
8 | 2048 |
9 | 7280 |
10 | 26214 |
11 | 95325 |
12 | 349520 |
13 | 1290555 |
14 | 4793490 |
15 | 17895679 |
16 | 67108864 |
17 | 252645135 |
18 | 954437120 |
19 | 3616814565 |
20 | 13743895344 |
21 | 52357696365 |
22 | 199911205050 |
23 | 764877654105 |
24 | 2932031006720 |
25 | 11258999068416 |
[1,2,5,16,51,170,585,2048,7280,26214,95325,349520, 1290555,4793490,17895679,67108864,252645135, 954437120,3616814565,13743895344,52357696365, 199911205050,764877654105,2932031006720, 11258999068416] |