A137260 - OEIS

A137260 as a simple table

n	a(n)
1	0
2	0
3	0
4	1
5	2
6	0
7	5
8	10
9	12
10	0
11	23
12	46
13	66
14	72
15	0
16	119
17	238
18	354
19	456
20	480
21	0
22	719
23	1438
24	2154
25	2856
26	3480
27	3600
28	0
29	5039
30	10078
31	15114
32	20136
33	25080
34	29520
35	30240
36	0
37	40319
38	80638
39	120954
40	161256
41	201480
42	241200
43	277200
44	282240
45	0
46	362879
47	725758
48	1088634
49	1451496
50	1814280
51	2176560
52	2535120
53	2862720
54	2903040
55	0

[0,0,0,1,2,0,5,10,12,0,23,46,66,72,0,119,238,354, 456,480,0,719,1438,2154,2856,3480,3600,0,5039, 10078,15114,20136,25080,29520,30240,0,40319,80638, 120954,161256,201480,241200,277200,282240,0, 362879,725758,1088634,1451496,1814280,2176560, 2535120,2862720,2903040,0]