n | a(n) |
---|---|
5 | 1 |
6 | 1 |
7 | 3 |
8 | 7 |
9 | 19 |
10 | 46 |
11 | 124 |
12 | 320 |
13 | 858 |
14 | 2282 |
15 | 6161 |
16 | 16647 |
17 | 45352 |
18 | 123861 |
19 | 340000 |
20 | 936098 |
21 | 2586518 |
22 | 7166394 |
23 | 19911638 |
24 | 55456892 |
25 | 154814055 |
26 | 433081632 |
27 | 1213901668 |
28 | 3408659401 |
29 | 9587879987 |
30 | 27011564035 |
31 | 76212078500 |
[1,1,3,7,19,46,124,320,858,2282,6161,16647,45352, 123861,340000,936098,2586518,7166394,19911638, 55456892,154814055,433081632,1213901668, 3408659401,9587879987,27011564035,76212078500] |