n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 1 |
3 | 5 |
4 | 18 |
5 | 56 |
6 | 161 |
7 | 443 |
8 | 1196 |
9 | 3228 |
10 | 8823 |
11 | 24579 |
12 | 69810 |
13 | 201380 |
14 | 586843 |
15 | 1719081 |
16 | 5044584 |
17 | 14800352 |
18 | 43384747 |
19 | 127076015 |
20 | 372100654 |
21 | 1089864344 |
22 | 3194496987 |
23 | 9372984609 |
24 | 27532712140 |
25 | 80966582548 |
26 | 238342592353 |
27 | 702222958797 |
28 | 2070454005078 |
29 | 6108341367004 |
[0,0,1,5,18,56,161,443,1196,3228,8823,24579,69810, 201380,586843,1719081,5044584,14800352,43384747, 127076015,372100654,1089864344,3194496987, 9372984609,27532712140,80966582548,238342592353, 702222958797,2070454005078,6108341367004] |