n | a(n) |
---|---|
3 | 1 |
4 | 0 |
5 | 4 |
6 | 6 |
7 | 21 |
8 | 32 |
9 | 46 |
10 | 88 |
11 | 190 |
12 | 468 |
13 | 1046 |
14 | 2370 |
15 | 6015 |
16 | 12766 |
17 | 33972 |
18 | 81676 |
19 | 202255 |
20 | 504674 |
21 | 1275789 |
22 | 3206424 |
23 | 8249961 |
24 | 21031764 |
25 | 54337702 |
26 | 140377742 |
27 | 364430952 |
28 | 948642166 |
29 | 2473160606 |
30 | 6456496008 |
31 | 16874434634 |
[1,0,4,6,21,32,46,88,190,468,1046,2370,6015,12766, 33972,81676,202255,504674,1275789,3206424,8249961, 21031764,54337702,140377742,364430952,948642166, 2473160606,6456496008,16874434634] |