n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 0 |
6 | 0 |
7 | 3 |
8 | 20 |
9 | 198 |
10 | 1390 |
11 | 9474 |
12 | 35488 |
13 | 178448 |
14 | 696371 |
15 | 2721544 |
16 | 10683110 |
17 | 41334494 |
18 | 155723774 |
19 | 596182769 |
20 | 2257379379 |
21 | 8587521496 |
22 | 32688629235 |
23 | 124568505590 |
24 | 475147925759 |
25 | 1815832051949 |
[0,0,0,0,0,0,3,20,198,1390,9474,35488,178448, 696371,2721544,10683110,41334494,155723774, 596182769,2257379379,8587521496,32688629235, 124568505590,475147925759,1815832051949] |