n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 1 |
3 | 1 |
4 | 3 |
5 | 4 |
6 | 12 |
7 | 19 |
8 | 51 |
9 | 106 |
10 | 274 |
11 | 647 |
12 | 1773 |
13 | 4664 |
14 | 13418 |
15 | 38861 |
16 | 118690 |
17 | 370588 |
18 | 1202924 |
19 | 4006557 |
20 | 13764760 |
21 | 48517672 |
22 | 175603676 |
23 | 651026060 |
24 | 2471150365 |
25 | 9590103580 |
26 | 38023295735 |
27 | 153871104726 |
28 | 635078474978 |
29 | 2671365285303 |
30 | 11444367926725 |
31 | 49903627379427 |
[1,0,1,1,3,4,12,19,51,106,274,647,1773,4664,13418, 38861,118690,370588,1202924,4006557,13764760, 48517672,175603676,651026060,2471150365, 9590103580,38023295735,153871104726,635078474978, 2671365285303,11444367926725,49903627379427] |