n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 6 |
3 | 17 |
4 | 63 |
5 | 222 |
6 | 868 |
7 | 3265 |
8 | 13405 |
9 | 53275 |
10 | 223259 |
11 | 914164 |
12 | 3909764 |
13 | 16388698 |
14 | 70927944 |
15 | 302334626 |
16 | 1322634824 |
17 | 5711521875 |
18 | 25182959651 |
19 | 109885961160 |
20 | 487770976428 |
21 | 2146224129991 |
22 | 9579356119447 |
23 | 42445372186746 |
24 | 190338310464854 |
25 | 848302510691958 |
26 | 3819433753111438 |
27 | 17107621720377267 |
[1,2,6,17,63,222,868,3265,13405,53275,223259, 914164,3909764,16388698,70927944,302334626, 1322634824,5711521875,25182959651,109885961160, 487770976428,2146224129991,9579356119447, 42445372186746,190338310464854,848302510691958, 3819433753111438,17107621720377267] |