n | a(n) |
---|---|
3 | 0 |
4 | 0 |
5 | 0 |
6 | 2 |
7 | 6 |
8 | 14 |
9 | 24 |
10 | 46 |
11 | 88 |
12 | 162 |
13 | 300 |
14 | 562 |
15 | 1056 |
16 | 1982 |
17 | 3742 |
18 | 7082 |
19 | 13438 |
20 | 25574 |
21 | 48768 |
22 | 93198 |
23 | 178480 |
24 | 342392 |
25 | 657918 |
26 | 1266202 |
27 | 2440318 |
28 | 4709374 |
29 | 9099504 |
30 | 17602322 |
31 | 34087010 |
32 | 66076414 |
33 | 128207976 |
34 | 248983550 |
35 | 483939976 |
36 | 941362694 |
37 | 1832519262 |
38 | 3569842946 |
39 | 6958934352 |
[0,0,0,2,6,14,24,46,88,162,300,562,1056,1982,3742, 7082,13438,25574,48768,93198,178480,342392,657918, 1266202,2440318,4709374,9099504,17602322,34087010, 66076414,128207976,248983550,483939976,941362694, 1832519262,3569842946,6958934352] |