n | a(n) |
---|---|
1 | 4 |
2 | 23 |
3 | 96 |
4 | 400 |
5 | 1704 |
6 | 7313 |
7 | 31328 |
8 | 134118 |
9 | 574442 |
10 | 2460748 |
11 | 10541124 |
12 | 45155605 |
13 | 193438738 |
14 | 828663631 |
15 | 3549885894 |
16 | 15207276051 |
17 | 65146190696 |
18 | 279078852182 |
19 | 1195542461428 |
20 | 5121570860689 |
21 | 21940242659146 |
22 | 93989578468682 |
[4,23,96,400,1704,7313,31328,134118,574442, 2460748,10541124,45155605,193438738,828663631, 3549885894,15207276051,65146190696,279078852182, 1195542461428,5121570860689,21940242659146, 93989578468682] |