n | a(n) |
---|---|
1 | 2 |
2 | 2 |
3 | 4 |
4 | 6 |
5 | 12 |
6 | 20 |
7 | 40 |
8 | 74 |
9 | 148 |
10 | 286 |
11 | 568 |
12 | 1118 |
13 | 2228 |
14 | 4412 |
15 | 8788 |
16 | 17480 |
17 | 34836 |
18 | 69392 |
19 | 138388 |
20 | 275942 |
21 | 550560 |
22 | 1098516 |
23 | 2192572 |
24 | 4376666 |
25 | 8738324 |
26 | 17448308 |
27 | 34845304 |
28 | 69594398 |
29 | 139011816 |
30 | 277691852 |
31 | 554767744 |
32 | 1108378658 |
33 | 2214594580 |
34 | 4425117884 |
35 | 8842583584 |
36 | 17670722600 |
37 | 35314182976 |
38 | 70576759892 |
39 | 141055781836 |
[2,2,4,6,12,20,40,74,148,286,568,1118,2228,4412, 8788,17480,34836,69392,138388,275942,550560, 1098516,2192572,4376666,8738324,17448308,34845304, 69594398,139011816,277691852,554767744,1108378658, 2214594580,4425117884,8842583584,17670722600, 35314182976,70576759892,141055781836] |