n | a(n) |
---|---|
10 | 1 |
11 | 0 |
12 | 6 |
13 | 13 |
14 | 55 |
15 | 189 |
16 | 694 |
17 | 2516 |
18 | 9213 |
19 | 33782 |
20 | 124300 |
21 | 458502 |
22 | 1695469 |
23 | 6284175 |
24 | 23344173 |
25 | 86904615 |
26 | 324197100 |
27 | 1211841846 |
28 | 4538611107 |
29 | 17029834923 |
30 | 64014608376 |
31 | 241046175666 |
32 | 909171583214 |
33 | 3434698413540 |
34 | 12995770332449 |
[1,0,6,13,55,189,694,2516,9213,33782,124300, 458502,1695469,6284175,23344173,86904615, 324197100,1211841846,4538611107,17029834923, 64014608376,241046175666,909171583214, 3434698413540,12995770332449] |