A023933 - OEIS

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A023933 as a simple table

n	a(n)
0	1
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	0
14	0
15	0
16	0
17	0
18	0
19	0
20	0
21	44
22	0
23	0
24	0
25	0
26	0
27	0
28	0
29	0
30	0
31	0
32	0
33	0
34	0
35	0
36	0
37	0
38	0
39	0
40	462
41	0
42	0
43	0
44	462
45	0
46	0
47	0
48	0
49	0
50	0
51	0
52	0
53	0
54	0
55	0
56	0
57	3080
58	0
59	0
60	0
61	0
62	0
63	0
64	0
65	9240
66	0
67	0
68	0
69	0
70	0
71	0
72	14630
73	0
74	0
75	0
76	0
77	0
78	0
79	0
80	0

[1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,44,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,462,0,0,0,462,0,0, 0,0,0,0,0,0,0,0,0,0,3080,0,0,0,0,0,0,0,9240,0,0,0, 0,0,0,14630,0,0,0,0,0,0,0,0]