n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 5 |
3 | 18 |
4 | 66 |
5 | 244 |
6 | 969 |
7 | 3882 |
8 | 15884 |
9 | 66549 |
10 | 279371 |
11 | 1192017 |
12 | 5139781 |
13 | 22231883 |
14 | 97151958 |
15 | 426603705 |
16 | 1881495031 |
17 | 8351057769 |
18 | 37165328425 |
19 | 166110559004 |
20 | 745346186757 |
21 | 3351665129165 |
22 | 15125494941915 |
23 | 68426069505670 |
24 | 310206953710543 |
25 | 1410144514408499 |
26 | 6421163357993262 |
27 | 29297942391071343 |
[1,2,5,18,66,244,969,3882,15884,66549,279371, 1192017,5139781,22231883,97151958,426603705, 1881495031,8351057769,37165328425,166110559004, 745346186757,3351665129165,15125494941915, 68426069505670,310206953710543,1410144514408499, 6421163357993262,29297942391071343] |