n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 1 |
6 | 1 |
7 | 1 |
8 | 1 |
9 | 1 |
10 | 127 |
11 | 463 |
12 | 1255 |
13 | 3004 |
14 | 6722 |
15 | 140570 |
16 | 1039260 |
17 | 5371627 |
18 | 23202077 |
19 | 90048525 |
20 | 814737785 |
21 | 7967774337 |
22 | 62895570839 |
23 | 417560407223 |
24 | 2455461090505 |
25 | 18440499041402 |
26 | 179627278800426 |
27 | 1770970802250146 |
[1,0,0,0,0,1,1,1,1,1,127,463,1255,3004,6722, 140570,1039260,5371627,23202077,90048525, 814737785,7967774337,62895570839,417560407223, 2455461090505,18440499041402,179627278800426, 1770970802250146] |