A231285 - OEIS

A231285 as a simple table

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	2
9	0
10	0
11	0
12	6
13	8
14	0
15	0
16	0
17	26
18	76
19	66
20	0
21	0
22	0
23	118
24	834
25	1170
26	400
27	0
28	0
29	0
30	522
31	9488
32	34786
33	18208
34	2722
35	0
36	0
37	0
38	2310
39	105962
40	1083188
41	1400418
42	278758
43	17688
44	0
45	0
46	0
47	10234
48	1179364
49	31513702
50	113949472
51	56442770
52	4294812
53	117026
54	0

[0,0,0,0,0,0,0,2,0,0,0,6,8,0,0,0,26,76,66,0,0,0, 118,834,1170,400,0,0,0,522,9488,34786,18208,2722, 0,0,0,2310,105962,1083188,1400418,278758,17688,0, 0,0,10234,1179364,31513702,113949472,56442770, 4294812,117026,0]