A259857 - OEIS

A259857 as a simple table

n	a(n)
1	1
2	0
3	2
4	0
5	0
6	6
7	0
8	0
9	1
10	18
11	0
12	0
13	0
14	8
15	55
16	0
17	0
18	0
19	2
20	40
21	174
22	0
23	0
24	0
25	0
26	22
27	168
28	566
29	0
30	0
31	0
32	0
33	6
34	134
35	676
36	1868
37	0
38	0
39	0
40	0
41	1
42	72
43	656
44	2672
45	6237
46	0
47	0
48	0
49	0
50	0
51	30
52	482
53	2992
54	10376
55	21050
56	0
57	0
58	0
59	0
60	0
61	8
62	310
63	2592
64	13160
65	39824
66	71666
67	0
68	0
69	0
70	0
71	0
72	2
73	151
74	2086
75	12862
76	56162
77	151878
78	245696

[1,0,2,0,0,6,0,0,1,18,0,0,0,8,55,0,0,0,2,40,174,0, 0,0,0,22,168,566,0,0,0,0,6,134,676,1868,0,0,0,0,1, 72,656,2672,6237,0,0,0,0,0,30,482,2992,10376, 21050,0,0,0,0,0,8,310,2592,13160,39824,71666,0,0, 0,0,0,2,151,2086,12862,56162,151878,245696]