n | a(n) |
---|---|
3 | 0 |
4 | 63 |
5 | 1566 |
6 | 13971 |
7 | 77124 |
8 | 319206 |
9 | 1083723 |
10 | 3181401 |
11 | 8344854 |
12 | 20006349 |
13 | 44548227 |
14 | 93248628 |
15 | 185176866 |
16 | 351410664 |
17 | 640972980 |
18 | 1129067352 |
19 | 1928196432 |
20 | 3203016813 |
[0,63,1566,13971,77124,319206,1083723,3181401, 8344854,20006349,44548227,93248628,185176866, 351410664,640972980,1129067352,1928196432, 3203016813] |