n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 4 |
3 | 0 |
4 | 16 |
5 | 0 |
6 | 136 |
7 | 0 |
8 | 1128 |
9 | 384 |
10 | 8120 |
11 | 6912 |
12 | 60904 |
13 | 75136 |
14 | 491960 |
15 | 720640 |
16 | 4023592 |
17 | 6828928 |
18 | 32819320 |
19 | 63472640 |
20 | 270471784 |
21 | 574543744 |
22 | 2256221368 |
23 | 5119155712 |
24 | 18940876712 |
25 | 45266369152 |
26 | 159625747960 |
27 | 397949457408 |
28 | 1350573713256 |
[1,0,4,0,16,0,136,0,1128,384,8120,6912,60904, 75136,491960,720640,4023592,6828928,32819320, 63472640,270471784,574543744,2256221368, 5119155712,18940876712,45266369152,159625747960, 397949457408,1350573713256] |