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A047200 as a simple table

n a(n)
1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 0
9 15
10 21
11 28
12 112
13 144
14 180
15 450
16 550
17 660
18 1815
19 2275
20 2821
21 10192
22 13230
23 16940
24 57680
25 74256
26 94248
27 288456
28 367080
29 461700
30 1427850
31 1824690
32 2310000
33 7521360
34 9684840
35 12357532
36 40225735
37 51798175
38 66098175

[0,0,0,0,0,0,0,0,15,21,28,112,144,180,450,550,660,
 1815,2275,2821,10192,13230,16940,57680,74256,
 94248,288456,367080,461700,1427850,1824690,
 2310000,7521360,9684840,12357532,40225735,
 51798175,66098175]

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Last modified March 28 11:00 EDT 2020. Contains 333083 sequences. (Running on oeis4.)