n | a(n) |
---|---|
3 | 0 |
4 | 2 |
5 | 0 |
6 | 4 |
7 | 0 |
8 | 40 |
9 | 0 |
10 | 150 |
11 | 4 |
12 | 610 |
13 | 96 |
14 | 2798 |
15 | 864 |
16 | 13218 |
17 | 7192 |
18 | 64934 |
19 | 52332 |
20 | 328222 |
21 | 339808 |
22 | 1727350 |
23 | 2177700 |
24 | 9454774 |
25 | 13785720 |
26 | 53012810 |
27 | 85897980 |
28 | 303909174 |
29 | 534416936 |
30 | 1779749852 |
31 | 3336552436 |
32 | 10595394664 |
33 | 20885768548 |
34 | 63879012118 |
[0,2,0,4,0,40,0,150,4,610,96,2798,864,13218,7192, 64934,52332,328222,339808,1727350,2177700,9454774, 13785720,53012810,85897980,303909174,534416936, 1779749852,3336552436,10595394664,20885768548, 63879012118] |