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A180013 as a simple table

n a(n)
1 1
2 0
3 2
4 0
5 3
6 3
7 0
8 8
9 12
10 4
11 0
12 30
13 55
14 30
15 5
16 0
17 144
18 300
19 210
20 60
21 6
22 0
23 840
24 1918
25 1575
26 595
27 105
28 7
29 0
30 5760
31 14112
32 12992
33 5880
34 1400
35 168
36 8
37 0
38 45360
39 117612
40 118188
41 60921
42 17640
43 2898
44 252
45 9
46 0
47 403200
48 1095840
49 1181240
50 672840
51 224490
52 45360
53 5460
54 360
55 10

[1,0,2,0,3,3,0,8,12,4,0,30,55,30,5,0,144,300,210,
 60,6,0,840,1918,1575,595,105,7,0,5760,14112,12992,
 5880,1400,168,8,0,45360,117612,118188,60921,17640,
 2898,252,9,0,403200,1095840,1181240,672840,224490,
 45360,5460,360,10]

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Last modified February 19 19:06 EST 2020. Contains 332047 sequences. (Running on oeis4.)