A278553 - OEIS

A278553 as a simple table

n	a(n)
1	0
2	0
3	0
4	4
5	70
6	4
7	65
8	1531
9	1531
10	65
11	456
12	25402
13	124564
14	25402
15	456
16	2128
17	385040
18	6207774
19	6207774
20	385040
21	2128
22	7728
23	4880813
24	256173362
25	1116456061
26	256173362
27	4880813
28	7728
29	23607
30	50476458
31	9647190761
32	157222953688
33	157222953688

[0,0,0,4,70,4,65,1531,1531,65,456,25402,124564, 25402,456,2128,385040,6207774,6207774,385040,2128, 7728,4880813,256173362,1116456061,256173362, 4880813,7728,23607,50476458,9647190761, 157222953688,157222953688]

[0,0,0,4,70,4,65,1531,1531,65,456,25402,124564,
 25402,456,2128,385040,6207774,6207774,385040,2128,
 7728,4880813,256173362,1116456061,256173362,
 4880813,7728,23607,50476458,9647190761,
 157222953688,157222953688]