A216809 - OEIS

A216809 as a simple table

n	a(n)
1	1
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	1
12	0
13	0
14	0
15	0
16	0
17	12
18	0
19	0
20	0
21	0
22	12
23	0
24	0
25	0
26	0
27	10
28	150
29	0
30	0
31	0
32	0
33	6
34	330
35	0
36	0
37	0
38	0
39	4
40	485
41	2160
42	0
43	0
44	0
45	0
46	1
47	570
48	7750
49	0
50	0
51	0
52	0
53	1
54	610
55	17280
56	36015
57	0
58	0
59	0
60	0
61	0
62	600
63	30120
64	185430
65	0
66	0
67	0
68	0
69	0
70	580
71	45720
72	574280
73	688128
74	0
75	0
76	0
77	0
78	0
79	530
80	63870
81	1364195
82	4727520

[1,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,12,0,0,0,0,12,0, 0,0,0,10,150,0,0,0,0,6,330,0,0,0,0,4,485,2160,0,0, 0,0,1,570,7750,0,0,0,0,1,610,17280,36015,0,0,0,0, 0,600,30120,185430,0,0,0,0,0,580,45720,574280, 688128,0,0,0,0,0,530,63870,1364195,4727520]

[1,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,12,0,0,0,0,12,0,
 0,0,0,10,150,0,0,0,0,6,330,0,0,0,0,4,485,2160,0,0,
 0,0,1,570,7750,0,0,0,0,1,610,17280,36015,0,0,0,0,
 0,600,30120,185430,0,0,0,0,0,580,45720,574280,
 688128,0,0,0,0,0,530,63870,1364195,4727520]