n | a(n) |
---|---|
3 | 0 |
4 | 0 |
5 | 4 |
6 | 6 |
7 | 4 |
8 | 14 |
9 | 58 |
10 | 92 |
11 | 210 |
12 | 634 |
13 | 1508 |
14 | 3396 |
15 | 9146 |
16 | 23122 |
17 | 57426 |
18 | 148059 |
19 | 387186 |
20 | 999616 |
21 | 2610208 |
22 | 6896852 |
23 | 18208962 |
24 | 48186835 |
25 | 128268784 |
26 | 342178817 |
27 | 913913320 |
28 | 2447445969 |
29 | 6567765526 |
30 | 17648723962 |
31 | 47503178926 |
[0,0,4,6,4,14,58,92,210,634,1508,3396,9146,23122, 57426,148059,387186,999616,2610208,6896852, 18208962,48186835,128268784,342178817,913913320, 2447445969,6567765526,17648723962,47503178926] |