n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 0 |
3 | 1 |
4 | 1 |
5 | 2 |
6 | 3 |
7 | 7 |
8 | 11 |
9 | 26 |
10 | 52 |
11 | 120 |
12 | 266 |
13 | 640 |
14 | 1509 |
15 | 3702 |
16 | 9090 |
17 | 22781 |
18 | 57452 |
19 | 146783 |
20 | 377357 |
21 | 978342 |
22 | 2550611 |
23 | 6690242 |
24 | 17633855 |
25 | 46705333 |
26 | 124227015 |
27 | 331757697 |
28 | 889207207 |
29 | 2391478247 |
30 | 6451880415 |
31 | 17457214729 |
32 | 47363110968 |
[0,1,0,1,1,2,3,7,11,26,52,120,266,640,1509,3702, 9090,22781,57452,146783,377357,978342,2550611, 6690242,17633855,46705333,124227015,331757697, 889207207,2391478247,6451880415,17457214729, 47363110968] |