n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 7 |
4 | 22 |
5 | 68 |
6 | 230 |
7 | 790 |
8 | 2809 |
9 | 10151 |
10 | 37346 |
11 | 139116 |
12 | 524160 |
13 | 1993184 |
14 | 7641077 |
15 | 29497043 |
16 | 114568292 |
17 | 447397474 |
18 | 1755543081 |
19 | 6918285937 |
20 | 27369693199 |
21 | 108659122477 |
22 | 432762724820 |
23 | 1728625913332 |
24 | 6923326780630 |
25 | 27797059897118 |
26 | 111859099064653 |
27 | 451086075723925 |
28 | 1822628515630354 |
29 | 7377839562543650 |
[1,1,3,7,22,68,230,790,2809,10151,37346,139116, 524160,1993184,7641077,29497043,114568292, 447397474,1755543081,6918285937,27369693199, 108659122477,432762724820,1728625913332, 6923326780630,27797059897118,111859099064653, 451086075723925,1822628515630354,7377839562543650] |