n | a(n) |
---|---|
4 | 1 |
5 | 5 |
6 | 21 |
7 | 80 |
8 | 287 |
9 | 993 |
10 | 3347 |
11 | 11067 |
12 | 36055 |
13 | 116089 |
14 | 370222 |
15 | 1171353 |
16 | 3681375 |
17 | 11504101 |
18 | 35772799 |
19 | 110760185 |
20 | 341640131 |
21 | 1050254568 |
22 | 3218970519 |
23 | 9839399805 |
24 | 30002862947 |
25 | 91284474775 |
26 | 277176264351 |
27 | 840067321393 |
28 | 2541769382014 |
29 | 7678558044741 |
30 | 23163047559031 |
[1,5,21,80,287,993,3347,11067,36055,116089,370222, 1171353,3681375,11504101,35772799,110760185, 341640131,1050254568,3218970519,9839399805, 30002862947,91284474775,277176264351,840067321393, 2541769382014,7678558044741,23163047559031] |