n | a(n) |
---|---|
1 | 4 |
2 | 25 |
3 | 77 |
4 | 385 |
5 | 2099 |
6 | 9083 |
7 | 48188 |
8 | 249446 |
9 | 1166325 |
10 | 6288299 |
11 | 31791039 |
12 | 153857132 |
13 | 834409385 |
14 | 4178055126 |
15 | 20594948568 |
16 | 111887135749 |
17 | 558869714981 |
18 | 2784252991713 |
19 | 15113219048778 |
20 | 75548474928693 |
21 | 378923024757908 |
[4,25,77,385,2099,9083,48188,249446,1166325, 6288299,31791039,153857132,834409385,4178055126, 20594948568,111887135749,558869714981, 2784252991713,15113219048778,75548474928693, 378923024757908] |