A321418 - OEIS

A321418 as a simple table

n	a(n)
0	1
1	0
2	0
3	5
4	0
5	3
6	15
7	0
8	15
9	35
10	6
11	45
12	70
13	30
14	105
15	135
16	90
17	210
18	255
19	210
20	390
21	465
22	420
23	690
24	810
25	771
26	1170
27	1345
28	1335
29	1905
30	2153
31	2205
32	2985
33	3345
34	3495
35	4536
36	5060
37	5340
38	6720
39	7465
40	7920
41	9735
42	10755
43	11460
44	13815
45	15180
46	16230
47	19230
48	21045
49	22545

[1,0,0,5,0,3,15,0,15,35,6,45,70,30,105,135,90,210, 255,210,390,465,420,690,810,771,1170,1345,1335, 1905,2153,2205,2985,3345,3495,4536,5060,5340,6720, 7465,7920,9735,10755,11460,13815,15180,16230, 19230,21045,22545]