n | a(n) |
---|---|
1 | 1 |
2 | 0 |
3 | 2 |
4 | 2 |
5 | 2 |
6 | 6 |
7 | 14 |
8 | 26 |
9 | 58 |
10 | 142 |
11 | 326 |
12 | 754 |
13 | 1826 |
14 | 4438 |
15 | 10750 |
16 | 26378 |
17 | 65354 |
18 | 162334 |
19 | 405046 |
20 | 1016546 |
21 | 2561074 |
22 | 6472550 |
23 | 16415086 |
24 | 41761786 |
25 | 106526810 |
26 | 272411054 |
27 | 698275622 |
28 | 1793763282 |
29 | 4617047618 |
30 | 11906277750 |
31 | 30757124830 |
32 | 79582907370 |
33 | 206231537770 |
[1,0,2,2,2,6,14,26,58,142,326,754,1826,4438,10750, 26378,65354,162334,405046,1016546,2561074,6472550, 16415086,41761786,106526810,272411054,698275622, 1793763282,4617047618,11906277750,30757124830, 79582907370,206231537770] |