n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 2 |
3 | 4 |
4 | 8 |
5 | 18 |
6 | 40 |
7 | 94 |
8 | 228 |
9 | 579 |
10 | 1508 |
11 | 4092 |
12 | 11478 |
13 | 33337 |
14 | 100016 |
15 | 309916 |
16 | 990008 |
17 | 3257196 |
18 | 11021851 |
19 | 38314009 |
20 | 136657181 |
21 | 499570867 |
22 | 1869792499 |
23 | 7158070137 |
24 | 28003286261 |
25 | 111857491266 |
26 | 455852284867 |
27 | 1893959499405 |
28 | 8017007560487 |
29 | 34552315237016 |
30 | 151534813272661 |
[0,1,2,4,8,18,40,94,228,579,1508,4092,11478,33337, 100016,309916,990008,3257196,11021851,38314009, 136657181,499570867,1869792499,7158070137, 28003286261,111857491266,455852284867, 1893959499405,8017007560487,34552315237016, 151534813272661] |