n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 1 |
4 | 3 |
5 | 6 |
6 | 13 |
7 | 25 |
8 | 45 |
9 | 91 |
10 | 175 |
11 | 322 |
12 | 645 |
13 | 1245 |
14 | 2325 |
15 | 4651 |
16 | 9031 |
17 | 17061 |
18 | 34123 |
19 | 66547 |
20 | 126763 |
21 | 253527 |
22 | 496063 |
23 | 950818 |
24 | 1901637 |
25 | 3730293 |
26 | 7184421 |
27 | 14368843 |
28 | 28243063 |
29 | 54604081 |
30 | 109208163 |
31 | 215008363 |
32 | 416990563 |
33 | 833981127 |
[0,0,1,3,6,13,25,45,91,175,322,645,1245,2325,4651, 9031,17061,34123,66547,126763,253527,496063, 950818,1901637,3730293,7184421,14368843,28243063, 54604081,109208163,215008363,416990563,833981127] |