n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 2 |
4 | 17 |
5 | 100 |
6 | 506 |
7 | 2366 |
8 | 10556 |
9 | 45696 |
10 | 193800 |
11 | 810084 |
12 | 3350479 |
13 | 13748020 |
14 | 56071470 |
15 | 227613750 |
16 | 920540040 |
17 | 3711935040 |
18 | 14932102320 |
19 | 59951235420 |
20 | 240316859250 |
21 | 962056169256 |
22 | 3847193657076 |
23 | 15370712686252 |
24 | 61364157982952 |
[0,0,0,2,17,100,506,2366,10556,45696,193800, 810084,3350479,13748020,56071470,227613750, 920540040,3711935040,14932102320,59951235420, 240316859250,962056169256,3847193657076, 15370712686252,61364157982952] |