n | a(n) |
---|---|
2 | 1 |
3 | 0 |
4 | 4 |
5 | 3 |
6 | 10 |
7 | 18 |
8 | 35 |
9 | 60 |
10 | 121 |
11 | 217 |
12 | 391 |
13 | 709 |
14 | 1281 |
15 | 2283 |
16 | 4061 |
17 | 7185 |
18 | 12680 |
19 | 22291 |
20 | 39051 |
21 | 68191 |
22 | 118767 |
23 | 206331 |
24 | 357596 |
25 | 618345 |
26 | 1066983 |
27 | 1837513 |
28 | 3158685 |
29 | 5420335 |
30 | 9286086 |
31 | 15884155 |
32 | 27130404 |
33 | 46274560 |
34 | 78822938 |
35 | 134095757 |
36 | 227853408 |
37 | 386721362 |
38 | 655639944 |
[1,0,4,3,10,18,35,60,121,217,391,709,1281,2283, 4061,7185,12680,22291,39051,68191,118767,206331, 357596,618345,1066983,1837513,3158685,5420335, 9286086,15884155,27130404,46274560,78822938, 134095757,227853408,386721362,655639944] |