A072275 - OEIS

A072275 as a simple table

n	a(n)
2	2
3	3
4	4
5	7
6	6
7	0
8	11
9	12
10	30
11	0
12	18
13	0
14	44
15	79
16	47
17	0
18	42
19	0
20	53
21	106
22	1581
23	0
24	82
25	211
26	1470
27	595
28	319
29	0
30	169
31	0
32	216
33	2819
34	177975
35	38836904
36	279
37	0
38	62947
39	41203
40	326
41	0
42	647
43	0
44	1795
45	907
46	8719625
47	0
48	369
49	0
50	841
51	12545382
52	6180
53	0
54	820
55	190066763704011

[2,3,4,7,6,0,11,12,30,0,18,0,44,79,47,0,42,0,53, 106,1581,0,82,211,1470,595,319,0,169,0,216,2819, 177975,38836904,279,0,62947,41203,326,0,647,0, 1795,907,8719625,0,369,0,841,12545382,6180,0,820, 190066763704011]