n | a(n) |
---|---|
10 | 1 |
11 | 1 |
12 | 7 |
13 | 21 |
14 | 93 |
15 | 319 |
16 | 1170 |
17 | 3931 |
18 | 13168 |
19 | 42365 |
20 | 134372 |
21 | 416765 |
22 | 1275718 |
23 | 3850137 |
24 | 11501014 |
25 | 34025545 |
26 | 99891325 |
27 | 291245242 |
28 | 844287970 |
29 | 2435145974 |
30 | 6993264128 |
31 | 20007298353 |
32 | 57051831889 |
33 | 162217819731 |
34 | 460079126428 |
35 | 1301975691316 |
36 | 3677269460008 |
37 | 10368105592318 |
[1,1,7,21,93,319,1170,3931,13168,42365,134372, 416765,1275718,3850137,11501014,34025545,99891325, 291245242,844287970,2435145974,6993264128, 20007298353,57051831889,162217819731,460079126428, 1301975691316,3677269460008,10368105592318] |