n | a(n) |
---|---|
3 | 0 |
4 | 0 |
5 | 6 |
6 | 5 |
7 | 7 |
8 | 35 |
9 | 57 |
10 | 107 |
11 | 322 |
12 | 660 |
13 | 1430 |
14 | 3576 |
15 | 8424 |
16 | 20414 |
17 | 50587 |
18 | 126317 |
19 | 325163 |
20 | 836308 |
21 | 2160569 |
22 | 5689990 |
23 | 15010004 |
24 | 39609681 |
25 | 105287045 |
26 | 280362602 |
27 | 746474009 |
28 | 1992061356 |
29 | 5322307432 |
30 | 14224337143 |
31 | 38055181243 |
[0,0,6,5,7,35,57,107,322,660,1430,3576,8424,20414, 50587,126317,325163,836308,2160569,5689990, 15010004,39609681,105287045,280362602,746474009, 1992061356,5322307432,14224337143,38055181243] |