n | a(n) |
---|---|
11 | 2 |
12 | 6 |
13 | 21 |
14 | 63 |
15 | 185 |
16 | 512 |
17 | 1403 |
18 | 3750 |
19 | 9928 |
20 | 25969 |
21 | 67462 |
22 | 174039 |
23 | 446884 |
24 | 1142457 |
25 | 2911078 |
26 | 7396049 |
27 | 18746761 |
28 | 47420345 |
29 | 119746936 |
30 | 301941284 |
31 | 760387426 |
32 | 1912814031 |
33 | 4807298905 |
34 | 12071798139 |
35 | 30292240853 |
36 | 75965728619 |
37 | 190398931985 |
38 | 476980247827 |
39 | 1194401725174 |
[2,6,21,63,185,512,1403,3750,9928,25969,67462, 174039,446884,1142457,2911078,7396049,18746761, 47420345,119746936,301941284,760387426,1912814031, 4807298905,12071798139,30292240853,75965728619, 190398931985,476980247827,1194401725174] |