n | a(n) |
---|---|
1 | 1 |
2 | 6 |
3 | 30 |
4 | 115 |
5 | 374 |
6 | 1079 |
7 | 2848 |
8 | 7005 |
9 | 16285 |
10 | 36117 |
11 | 76981 |
12 | 158563 |
13 | 317014 |
14 | 617349 |
15 | 1174400 |
16 | 2187584 |
17 | 3998057 |
18 | 7181362 |
19 | 12696179 |
20 | 22120549 |
21 | 38023748 |
22 | 64546190 |
23 | 108296742 |
24 | 179729895 |
25 | 295244362 |
26 | 480358370 |
27 | 774483006 |
28 | 1238052200 |
[1,6,30,115,374,1079,2848,7005,16285,36117,76981, 158563,317014,617349,1174400,2187584,3998057, 7181362,12696179,22120549,38023748,64546190, 108296742,179729895,295244362,480358370,774483006, 1238052200] |