n | a(n) |
---|---|
1 | 4 |
2 | 30 |
3 | 106 |
4 | 292 |
5 | 712 |
6 | 1618 |
7 | 3518 |
8 | 7432 |
9 | 15404 |
10 | 31526 |
11 | 63986 |
12 | 129164 |
13 | 259824 |
14 | 521498 |
15 | 1045254 |
16 | 2093232 |
17 | 4189716 |
18 | 8383278 |
19 | 16771066 |
20 | 33547380 |
21 | 67100824 |
22 | 134208610 |
23 | 268425166 |
24 | 536859352 |
25 | 1073728892 |
26 | 2147469238 |
27 | 4294951298 |
28 | 8589916892 |
[4,30,106,292,712,1618,3518,7432,15404,31526, 63986,129164,259824,521498,1045254,2093232, 4189716,8383278,16771066,33547380,67100824, 134208610,268425166,536859352,1073728892, 2147469238,4294951298,8589916892] |