n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 0 |
6 | 1 |
7 | 5 |
8 | 19 |
9 | 61 |
10 | 180 |
11 | 498 |
12 | 1323 |
13 | 3405 |
14 | 8557 |
15 | 21103 |
16 | 51248 |
17 | 122898 |
18 | 291579 |
19 | 685562 |
20 | 1599209 |
21 | 3705122 |
22 | 8532309 |
23 | 19543867 |
24 | 44552066 |
25 | 101124867 |
26 | 228640542 |
27 | 515125815 |
28 | 1156829459 |
29 | 2590247002 |
30 | 5784031485 |
31 | 12883390590 |
32 | 28629914457 |
[0,0,0,0,0,1,5,19,61,180,498,1323,3405,8557,21103, 51248,122898,291579,685562,1599209,3705122, 8532309,19543867,44552066,101124867,228640542, 515125815,1156829459,2590247002,5784031485, 12883390590,28629914457] |