n | a(n) |
---|---|
2 | 1 |
3 | 1 |
4 | 3 |
5 | 5 |
6 | 13 |
7 | 27 |
8 | 66 |
9 | 153 |
10 | 377 |
11 | 914 |
12 | 2281 |
13 | 5690 |
14 | 14397 |
15 | 36564 |
16 | 93650 |
17 | 240916 |
18 | 623338 |
19 | 1619346 |
20 | 4224993 |
21 | 11062046 |
22 | 29062341 |
23 | 76581151 |
24 | 202365823 |
25 | 536113477 |
26 | 1423665699 |
27 | 3788843391 |
28 | 10103901486 |
29 | 26995498151 |
30 | 72253682560 |
31 | 193706542776 |
[1,1,3,5,13,27,66,153,377,914,2281,5690,14397, 36564,93650,240916,623338,1619346,4224993, 11062046,29062341,76581151,202365823,536113477, 1423665699,3788843391,10103901486,26995498151, 72253682560,193706542776] |