n | a(n) |
---|---|
1 | 2 |
2 | 12 |
3 | 50 |
4 | 204 |
5 | 818 |
6 | 3298 |
7 | 13202 |
8 | 52834 |
9 | 211346 |
10 | 845586 |
11 | 3382418 |
12 | 13531282 |
13 | 54125714 |
14 | 216503058 |
15 | 866012306 |
16 | 3464049426 |
17 | 13856197778 |
18 | 55424792722 |
19 | 221699171474 |
20 | 886796698770 |
21 | 3547186799762 |
22 | 14188747200658 |
23 | 56754988803218 |
24 | 227019955225746 |
25 | 908079820907666 |
[2,12,50,204,818,3298,13202,52834,211346,845586, 3382418,13531282,54125714,216503058,866012306, 3464049426,13856197778,55424792722,221699171474, 886796698770,3547186799762,14188747200658, 56754988803218,227019955225746,908079820907666] |