A247704 - OEIS

A247704 as a simple table

n	a(n)
0	1
1	1
2	0
3	3
4	0
5	2
6	36
7	16
8	4
9	0
10	177
11	220
12	100
13	0
14	4
15	1300
16	1720
17	816
18	144
19	26
20	0
21	8866
22	11152
23	5616
24	1784
25	524
26	0
27	8
28	54849
29	85016
30	51116
31	18380
32	4656
33	584
34	88
35	0
36	372943
37	622732
38	448744
39	189360
40	52130
41	8948
42	1908
43	0
44	16
45	2466986
46	4528336
47	3670116
48	1806160
49	582250
50	127140
51	22206
52	1912
53	248
54	0

[1,1,0,3,0,2,36,16,4,0,177,220,100,0,4,1300,1720, 816,144,26,0,8866,11152,5616,1784,524,0,8,54849, 85016,51116,18380,4656,584,88,0,372943,622732, 448744,189360,52130,8948,1908,0,16,2466986, 4528336,3670116,1806160,582250,127140,22206,1912, 248,0]