n | a(n) |
---|---|
0 | 1 |
1 | 5 |
2 | 18 |
3 | 63 |
4 | 224 |
5 | 799 |
6 | 2846 |
7 | 10132 |
8 | 36073 |
9 | 128438 |
10 | 457304 |
11 | 1628224 |
12 | 5797263 |
13 | 20641062 |
14 | 73492179 |
15 | 261667749 |
16 | 931663897 |
17 | 3317174627 |
18 | 11810748015 |
19 | 42051982296 |
20 | 149725420655 |
21 | 533095002085 |
22 | 1898076358760 |
23 | 6758070980980 |
24 | 24062005289281 |
25 | 85672390859855 |
[1,5,18,63,224,799,2846,10132,36073,128438,457304, 1628224,5797263,20641062,73492179,261667749, 931663897,3317174627,11810748015,42051982296, 149725420655,533095002085,1898076358760, 6758070980980,24062005289281,85672390859855] |