n | a(n) |
---|---|
0 | 0 |
1 | 2 |
2 | 4 |
3 | 9 |
4 | 22 |
5 | 53 |
6 | 129 |
7 | 327 |
8 | 847 |
9 | 2227 |
10 | 5968 |
11 | 16097 |
12 | 43934 |
13 | 120739 |
14 | 334349 |
15 | 931260 |
16 | 2607165 |
17 | 7332159 |
18 | 20700806 |
19 | 58648288 |
20 | 166677978 |
21 | 475023803 |
22 | 1357200840 |
23 | 3886548158 |
24 | 11152818693 |
25 | 32064929886 |
26 | 92349038518 |
27 | 266398236486 |
28 | 769616513836 |
29 | 2226457080707 |
30 | 6449247674296 |
31 | 18703411700669 |
32 | 54301968156067 |
33 | 157820174545456 |
[0,2,4,9,22,53,129,327,847,2227,5968,16097,43934, 120739,334349,931260,2607165,7332159,20700806, 58648288,166677978,475023803,1357200840, 3886548158,11152818693,32064929886,92349038518, 266398236486,769616513836,2226457080707, 6449247674296,18703411700669,54301968156067, 157820174545456] |