n | a(n) |
---|---|
3 | 1 |
4 | 3 |
5 | 9 |
6 | 29 |
7 | 98 |
8 | 343 |
9 | 1230 |
10 | 4489 |
11 | 16599 |
12 | 61997 |
13 | 233389 |
14 | 884170 |
15 | 3366951 |
16 | 12876702 |
17 | 49424984 |
18 | 190297064 |
19 | 734644291 |
20 | 2842707951 |
21 | 11022366544 |
22 | 42815701060 |
23 | 166583279325 |
24 | 649063995030 |
25 | 2532267577126 |
26 | 9891097066760 |
27 | 38676401680776 |
28 | 151381995733542 |
29 | 593053313030007 |
[1,3,9,29,98,343,1230,4489,16599,61997,233389, 884170,3366951,12876702,49424984,190297064, 734644291,2842707951,11022366544,42815701060, 166583279325,649063995030,2532267577126, 9891097066760,38676401680776,151381995733542, 593053313030007] |