n | a(n) |
---|---|
13 | 1 |
14 | 14 |
15 | 105 |
16 | 560 |
17 | 2380 |
18 | 8568 |
19 | 27132 |
20 | 77520 |
21 | 203490 |
22 | 497420 |
23 | 1144066 |
24 | 2496144 |
25 | 5200300 |
26 | 10400600 |
27 | 20058300 |
28 | 37442160 |
29 | 67863915 |
30 | 119759850 |
31 | 206253075 |
32 | 347373600 |
33 | 573166440 |
34 | 927983760 |
35 | 1476337800 |
36 | 2310789600 |
37 | 3562467300 |
38 | 5414950296 |
39 | 8122425444 |
40 | 12033222880 |
[1,14,105,560,2380,8568,27132,77520,203490,497420, 1144066,2496144,5200300,10400600,20058300, 37442160,67863915,119759850,206253075,347373600, 573166440,927983760,1476337800,2310789600, 3562467300,5414950296,8122425444,12033222880] |