n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 2 |
3 | 10 |
4 | 50 |
5 | 238 |
6 | 1092 |
7 | 4884 |
8 | 21450 |
9 | 92950 |
10 | 398684 |
11 | 1696396 |
12 | 7171892 |
13 | 30161740 |
14 | 126293000 |
15 | 526864680 |
16 | 2191034970 |
17 | 9086921190 |
18 | 37596989100 |
19 | 155232577500 |
20 | 639749274780 |
21 | 2632212288420 |
22 | 10814090022840 |
23 | 44369043365400 |
[0,1,2,10,50,238,1092,4884,21450,92950,398684, 1696396,7171892,30161740,126293000,526864680, 2191034970,9086921190,37596989100,155232577500, 639749274780,2632212288420,10814090022840, 44369043365400] |