n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 0 |
6 | 0 |
7 | 1 |
8 | 6 |
9 | 37 |
10 | 195 |
11 | 979 |
12 | 4663 |
13 | 21474 |
14 | 96496 |
15 | 425449 |
16 | 1849252 |
17 | 7946380 |
18 | 33840946 |
19 | 143060339 |
20 | 601165888 |
21 | 2513617990 |
22 | 10466220315 |
23 | 43425174374 |
24 | 179630865835 |
25 | 741123699012 |
26 | 3050860717372 |
27 | 12534339432498 |
28 | 51408312232300 |
29 | 210526591157926 |
30 | 860989703302456 |
[0,0,0,0,0,0,1,6,37,195,979,4663,21474,96496, 425449,1849252,7946380,33840946,143060339, 601165888,2513617990,10466220315,43425174374, 179630865835,741123699012,3050860717372, 12534339432498,51408312232300,210526591157926, 860989703302456] |