n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 1 |
3 | 21 |
4 | 7 |
5 | 1 |
6 | 120 |
7 | 45 |
8 | 10 |
9 | 1 |
10 | 715 |
11 | 286 |
12 | 78 |
13 | 13 |
14 | 1 |
15 | 4368 |
16 | 1820 |
17 | 560 |
18 | 120 |
19 | 16 |
20 | 1 |
21 | 27132 |
22 | 11628 |
23 | 3876 |
24 | 969 |
25 | 171 |
26 | 19 |
27 | 1 |
28 | 170544 |
29 | 74613 |
30 | 26334 |
31 | 7315 |
32 | 1540 |
33 | 231 |
34 | 22 |
35 | 1 |
36 | 1081575 |
37 | 480700 |
38 | 177100 |
39 | 53130 |
40 | 12650 |
41 | 2300 |
42 | 300 |
43 | 25 |
44 | 1 |
45 | 6906900 |
46 | 3108105 |
47 | 1184040 |
48 | 376740 |
[1,4,1,21,7,1,120,45,10,1,715,286,78,13,1,4368, 1820,560,120,16,1,27132,11628,3876,969,171,19,1, 170544,74613,26334,7315,1540,231,22,1,1081575, 480700,177100,53130,12650,2300,300,25,1,6906900, 3108105,1184040,376740] |