n | a(n) |
---|---|
1 | 7 |
2 | 49 |
3 | 240 |
4 | 1103 |
5 | 5357 |
6 | 26564 |
7 | 130828 |
8 | 641137 |
9 | 3143331 |
10 | 15426387 |
11 | 75714198 |
12 | 371548402 |
13 | 1823195326 |
14 | 8946675170 |
15 | 43903164079 |
16 | 215441286043 |
17 | 1057208843688 |
18 | 5187912250379 |
19 | 25458023997998 |
20 | 124927142385391 |
21 | 613040099740828 |
[7,49,240,1103,5357,26564,130828,641137,3143331, 15426387,75714198,371548402,1823195326,8946675170, 43903164079,215441286043,1057208843688, 5187912250379,25458023997998,124927142385391, 613040099740828] |