A305457 - OEIS

A305457 as a simple table

n	a(n)
1	0
2	0
3	0
4	0
5	3
6	0
7	0
8	5
9	5
10	0
11	0
12	18
13	14
14	18
15	0
16	0
17	61
18	69
19	69
20	61
21	0
22	0
23	209
24	376
25	661
26	376
27	209
28	0
29	0
30	702
31	1891
32	5580
33	5580
34	1891
35	702
36	0
37	0
38	2381
39	9889
40	48148
41	79810
42	48148
43	9889
44	2381
45	0
46	0
47	8069
48	51283
49	418382
50	1117343
51	1117343
52	418382
53	51283
54	8069
55	0
56	0
57	27330

[0,0,0,0,3,0,0,5,5,0,0,18,14,18,0,0,61,69,69,61,0, 0,209,376,661,376,209,0,0,702,1891,5580,5580,1891, 702,0,0,2381,9889,48148,79810,48148,9889,2381,0,0, 8069,51283,418382,1117343,1117343,418382,51283, 8069,0,0,27330]