n | a(n) |
---|---|
0 | 2 |
1 | 19 |
2 | 73 |
3 | 369 |
4 | 1697 |
5 | 8241 |
6 | 39441 |
7 | 190609 |
8 | 918929 |
9 | 4437649 |
10 | 21421201 |
11 | 103433361 |
12 | 499397777 |
13 | 2411316369 |
14 | 11642774673 |
15 | 56216331409 |
16 | 271436096657 |
17 | 1310609581201 |
18 | 6328181400721 |
19 | 30555163403409 |
20 | 147533373973649 |
[2,19,73,369,1697,8241,39441,190609,918929, 4437649,21421201,103433361,499397777,2411316369, 11642774673,56216331409,271436096657, 1310609581201,6328181400721,30555163403409, 147533373973649] |