n | a(n) |
---|---|
1 | 1 |
2 | 4 |
3 | 13 |
4 | 41 |
5 | 134 |
6 | 471 |
7 | 1819 |
8 | 7778 |
9 | 36703 |
10 | 189381 |
11 | 1057332 |
12 | 6328261 |
13 | 40300959 |
14 | 271501240 |
15 | 1925961025 |
16 | 14332064197 |
17 | 111528998198 |
18 | 905134802555 |
19 | 7643011810167 |
20 | 67010181855706 |
21 | 608890179868163 |
22 | 5724496098183649 |
[1,4,13,41,134,471,1819,7778,36703,189381,1057332, 6328261,40300959,271501240,1925961025,14332064197, 111528998198,905134802555,7643011810167, 67010181855706,608890179868163,5724496098183649] |