A083527 - OEIS

A083527 as a simple table

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	1
8	1
9	0
10	0
11	1
12	5
13	0
14	0
15	43
16	57
17	0
18	0
19	239
20	430
21	0
22	0
23	2904
24	5419
25	0
26	0
27	27813
28	50213
29	0
30	0
31	348082
32	649300
33	0
34	0
35	3913496
36	7287183
37	0
38	0
39	50030553
40	93696497
41	0
42	0
43	611793542
44	1161079907
45	0
46	0
47	8009933135
48	15176652567
49	0
50	0

[0,0,0,0,0,0,1,1,0,0,1,5,0,0,43,57,0,0,239,430,0, 0,2904,5419,0,0,27813,50213,0,0,348082,649300,0,0, 3913496,7287183,0,0,50030553,93696497,0,0, 611793542,1161079907,0,0,8009933135,15176652567,0, 0]