n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 0 |
3 | 0 |
4 | 1 |
5 | 3 |
6 | 3 |
7 | 1 |
8 | 3 |
9 | 15 |
10 | 30 |
11 | 30 |
12 | 27 |
13 | 87 |
14 | 252 |
15 | 420 |
16 | 475 |
17 | 747 |
18 | 2064 |
19 | 4632 |
20 | 7203 |
21 | 9933 |
22 | 19635 |
23 | 47025 |
24 | 92013 |
25 | 144745 |
26 | 237510 |
27 | 498498 |
28 | 1073817 |
29 | 1969131 |
30 | 3267411 |
31 | 5977881 |
32 | 12462579 |
33 | 25035747 |
34 | 45090936 |
35 | 79414344 |
36 | 153115299 |
37 | 311198457 |
38 | 600883569 |
39 | 1090988379 |
40 | 2012793705 |
[1,1,0,0,1,3,3,1,3,15,30,30,27,87,252,420,475,747, 2064,4632,7203,9933,19635,47025,92013,144745, 237510,498498,1073817,1969131,3267411,5977881, 12462579,25035747,45090936,79414344,153115299, 311198457,600883569,1090988379,2012793705] |