n | a(n) |
---|---|
1 | 2 |
2 | 1 |
3 | 0 |
4 | 0 |
5 | 0 |
6 | 1 |
7 | 2 |
8 | 6 |
9 | 14 |
10 | 30 |
11 | 62 |
12 | 127 |
13 | 252 |
14 | 493 |
15 | 968 |
16 | 1860 |
17 | 3600 |
18 | 6902 |
19 | 13286 |
20 | 25446 |
21 | 48914 |
22 | 93775 |
23 | 180314 |
24 | 346420 |
25 | 666996 |
26 | 1284318 |
27 | 2477328 |
28 | 4781007 |
29 | 9240012 |
30 | 17870709 |
31 | 34604066 |
32 | 67058880 |
33 | 130084990 |
34 | 252545160 |
35 | 490722342 |
[2,1,0,0,0,1,2,6,14,30,62,127,252,493,968,1860, 3600,6902,13286,25446,48914,93775,180314,346420, 666996,1284318,2477328,4781007,9240012,17870709, 34604066,67058880,130084990,252545160,490722342] |