A137388 - OEIS

A137388 as a simple table

n	a(n)
0	-1
1	-1
2	0
3	-1
4	0
5	6
6	-1
7	0
8	15
9	20
10	-1
11	0
12	27
13	64
14	45
15	-1
16	0
17	42
18	140
19	175
20	84
21	-1
22	0
23	60
24	256
25	450
26	384
27	140
28	-1
29	0
30	81
31	420
32	945
33	1134
34	735
35	216
36	-1
37	0
38	105
39	640
40	1750
41	2688
42	2450
43	1280
44	315
45	-1
46	0
47	132
48	924
49	2970
50	5544
51	6468
52	4752
53	2079
54	440
55	-1
56	0
57	162
58	1280
59	4725
60	10368
61	14700
62	13824
63	8505
64	3200
65	594

[-1,-1,0,-1,0,6,-1,0,15,20,-1,0,27,64,45,-1,0,42, 140,175,84,-1,0,60,256,450,384,140,-1,0,81,420, 945,1134,735,216,-1,0,105,640,1750,2688,2450,1280, 315,-1,0,132,924,2970,5544,6468,4752,2079,440,-1, 0,162,1280,4725,10368,14700,13824,8505,3200,594]