n | a(n) |
---|---|
0 | 1 |
1 | 8 |
2 | 46 |
3 | 230 |
4 | 1068 |
5 | 4744 |
6 | 20476 |
7 | 86662 |
8 | 361711 |
9 | 1494384 |
10 | 6126818 |
11 | 24972326 |
12 | 101320712 |
13 | 409609664 |
14 | 1651162688 |
15 | 6640469816 |
16 | 26655382802 |
17 | 106830738224 |
18 | 427612715516 |
19 | 1709790470780 |
20 | 6830461107736 |
21 | 27266848437608 |
[1,8,46,230,1068,4744,20476,86662,361711,1494384, 6126818,24972326,101320712,409609664,1651162688, 6640469816,26655382802,106830738224,427612715516, 1709790470780,6830461107736,27266848437608] |