A241855 - OEIS

A241855 as a simple table

n	a(n)
1	0
2	0
3	1
4	0
5	1
6	5
7	0
8	1
9	10
10	21
11	0
12	1
13	26
14	91
15	85
16	0
17	1
18	50
19	651
20	820
21	341
22	0
23	1
24	122
25	2451
26	16276
27	7381
28	1365
29	0
30	1
31	170
32	14763
33	120100
34	406901
35	66430
36	5461
37	0
38	1
39	290
40	28731
41	1786324
42	5884901
43	10172526
44	597871
45	21845
46	0
47	1
48	362
49	83811
50	4855540
51	216145205
52	288360150
53	254313151
54	5380840
55	87381

[0,0,1,0,1,5,0,1,10,21,0,1,26,91,85,0,1,50,651, 820,341,0,1,122,2451,16276,7381,1365,0,1,170, 14763,120100,406901,66430,5461,0,1,290,28731, 1786324,5884901,10172526,597871,21845,0,1,362, 83811,4855540,216145205,288360150,254313151, 5380840,87381]