n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 8 |
6 | 32 |
7 | 168 |
8 | 616 |
9 | 2380 |
10 | 8472 |
11 | 30760 |
12 | 109644 |
13 | 394816 |
14 | 1420784 |
15 | 5149948 |
16 | 18736744 |
17 | 68553728 |
18 | 251902032 |
19 | 929814984 |
20 | 3445433608 |
21 | 12814382620 |
22 | 47817551136 |
23 | 178982546512 |
24 | 671813695340 |
25 | 2528191984504 |
26 | 9536849826816 |
[0,0,0,0,0,8,32,168,616,2380,8472,30760,109644, 394816,1420784,5149948,18736744,68553728, 251902032,929814984,3445433608,12814382620, 47817551136,178982546512,671813695340, 2528191984504,9536849826816] |