n | a(n) |
---|---|
1 | 0 |
2 | 6 |
3 | 14 |
4 | 84 |
5 | 264 |
6 | 1450 |
7 | 5268 |
8 | 25070 |
9 | 102854 |
10 | 460146 |
11 | 1954930 |
12 | 8681238 |
13 | 37537698 |
14 | 165783402 |
15 | 725328338 |
16 | 3201189116 |
[0,6,14,84,264,1450,5268,25070,102854,460146, 1954930,8681238,37537698,165783402,725328338, 3201189116] |