A247404 - OEIS

A247404 as a simple table

n	a(n)
1	0
2	40
3	0
4	200
5	40
6	0
7	760
8	264
9	40
10	0
11	2280
12	1544
13	340
14	40
15	0
16	5640
17	6216
18	3200
19	428
20	40
21	0
22	12120
23	19080
24	17164
25	6752
26	528
27	40
28	0
29	23800
30	49032
31	65500
32	47592
33	14456
34	640
35	40
36	0
37	43040
38	113896
39	201172
40	225488
41	132368
42	31240
43	864
44	40
45	0
46	73840
47	237456
48	553328

[0,40,0,200,40,0,760,264,40,0,2280,1544,340,40,0, 5640,6216,3200,428,40,0,12120,19080,17164,6752, 528,40,0,23800,49032,65500,47592,14456,640,40,0, 43040,113896,201172,225488,132368,31240,864,40,0, 73840,237456,553328]