n | a(n) |
---|---|
7 | 1 |
8 | 2 |
9 | 7 |
10 | 22 |
11 | 73 |
12 | 240 |
13 | 818 |
14 | 2824 |
15 | 9995 |
16 | 36210 |
17 | 134397 |
18 | 511802 |
19 | 1999360 |
20 | 8023808 |
21 | 33066865 |
22 | 140066840 |
23 | 609466485 |
24 | 2725084766 |
25 | 12510393090 |
26 | 58957378290 |
27 | 284932585092 |
28 | 1411369884766 |
29 | 7157365741706 |
30 | 37132616218394 |
31 | 196866561660145 |
32 | 1065754768886044 |
[1,2,7,22,73,240,818,2824,9995,36210,134397, 511802,1999360,8023808,33066865,140066840, 609466485,2725084766,12510393090,58957378290, 284932585092,1411369884766,7157365741706, 37132616218394,196866561660145,1065754768886044] |