n | a(n) |
---|---|
8 | 1 |
9 | 0 |
10 | 0 |
11 | 0 |
12 | 0 |
13 | 0 |
14 | 0 |
15 | 0 |
16 | 1 |
17 | 9 |
18 | 45 |
19 | 165 |
20 | 495 |
21 | 1287 |
22 | 3003 |
23 | 6435 |
24 | 12871 |
25 | 24319 |
26 | 43812 |
27 | 75837 |
28 | 127005 |
29 | 207252 |
30 | 332343 |
31 | 529617 |
32 | 851797 |
33 | 1410484 |
34 | 2456794 |
35 | 4572624 |
36 | 9116790 |
37 | 19248417 |
38 | 42237738 |
39 | 94608183 |
40 | 213426424 |
41 | 480788350 |
42 | 1076330078 |
43 | 2388681769 |
44 | 5249788389 |
[1,0,0,0,0,0,0,0,1,9,45,165,495,1287,3003,6435, 12871,24319,43812,75837,127005,207252,332343, 529617,851797,1410484,2456794,4572624,9116790, 19248417,42237738,94608183,213426424,480788350, 1076330078,2388681769,5249788389] |