n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 12 |
3 | 52 |
4 | 236 |
5 | 1108 |
6 | 5340 |
7 | 26276 |
8 | 131484 |
9 | 667108 |
10 | 3424108 |
11 | 17748564 |
12 | 92776716 |
13 | 488527284 |
14 | 2588907708 |
15 | 13797337668 |
16 | 73901315644 |
17 | 397609958596 |
18 | 2147904635340 |
19 | 11645489540468 |
20 | 63349140877356 |
21 | 345651184335892 |
22 | 1891209255293852 |
[1,3,12,52,236,1108,5340,26276,131484,667108, 3424108,17748564,92776716,488527284,2588907708, 13797337668,73901315644,397609958596, 2147904635340,11645489540468,63349140877356, 345651184335892,1891209255293852] |