n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 0 |
6 | 0 |
7 | 1 |
8 | 2 |
9 | 7 |
10 | 12 |
11 | 31 |
12 | 58 |
13 | 126 |
14 | 233 |
15 | 484 |
16 | 904 |
17 | 1800 |
18 | 3395 |
19 | 6643 |
20 | 12612 |
21 | 24457 |
22 | 46655 |
23 | 90157 |
24 | 172750 |
25 | 333498 |
26 | 641214 |
27 | 1238664 |
28 | 2388618 |
29 | 4620006 |
30 | 8931536 |
31 | 17302033 |
32 | 33521792 |
33 | 65042495 |
34 | 126257160 |
35 | 245361171 |
36 | 477087772 |
37 | 928510506 |
38 | 1808145395 |
39 | 3523813566 |
[0,0,0,0,0,0,0,1,2,7,12,31,58,126,233,484,904, 1800,3395,6643,12612,24457,46655,90157,172750, 333498,641214,1238664,2388618,4620006,8931536, 17302033,33521792,65042495,126257160,245361171, 477087772,928510506,1808145395,3523813566] |