n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 1 |
3 | 1 |
4 | 3 |
5 | 11 |
6 | 25 |
7 | 127 |
8 | 441 |
9 | 1954 |
10 | 10011 |
11 | 45266 |
12 | 264583 |
13 | 1445380 |
14 | 8585655 |
15 | 55660801 |
16 | 352151073 |
17 | 2482766225 |
18 | 17559191557 |
19 | 129772490863 |
20 | 1013321885751 |
21 | 7972553309386 |
22 | 66428256850935 |
23 | 564371629663172 |
24 | 4946383948336009 |
25 | 45027627776367801 |
26 | 416996057365437135 |
[1,0,1,1,3,11,25,127,441,1954,10011,45266,264583, 1445380,8585655,55660801,352151073,2482766225, 17559191557,129772490863,1013321885751, 7972553309386,66428256850935,564371629663172, 4946383948336009,45027627776367801, 416996057365437135] |