n | a(n) |
---|---|
3 | 1 |
4 | 1 |
5 | 2 |
6 | 3 |
7 | 7 |
8 | 14 |
9 | 36 |
10 | 81 |
11 | 221 |
12 | 538 |
13 | 1530 |
14 | 3926 |
15 | 11510 |
16 | 30694 |
17 | 92114 |
18 | 252939 |
19 | 773259 |
20 | 2172830 |
21 | 6743122 |
22 | 19304190 |
23 | 60658606 |
24 | 176343390 |
25 | 559952824 |
26 | 1649008456 |
27 | 5283239596 |
28 | 15730575554 |
29 | 50789908772 |
30 | 152663683494 |
[1,1,2,3,7,14,36,81,221,538,1530,3926,11510,30694, 92114,252939,773259,2172830,6743122,19304190, 60658606,176343390,559952824,1649008456, 5283239596,15730575554,50789908772,152663683494] |