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A121547 as a simple table

n a(n)
0 0
1 0
2 1
3 0
4 4
5 4
6 0
7 10
8 20
9 10
10 0
11 20
12 60
13 60
14 20
15 0
16 35
17 140
18 210
19 140
20 35
21 0
22 56
23 280
24 560
25 560
26 280
27 56
28 0
29 84
30 504
31 1260
32 1680
33 1260
34 504
35 84
36 0
37 120
38 840
39 2520
40 4200
41 4200
42 2520
43 840
44 120
45 0
46 165
47 1320
48 4620
49 9240
50 11550
51 9240
52 4620
53 1320
54 165
55 1980
56 7920

[0,0,1,0,4,4,0,10,20,10,0,20,60,60,20,0,35,140,
 210,140,35,0,56,280,560,560,280,56,0,84,504,1260,
 1680,1260,504,84,0,120,840,2520,4200,4200,2520,
 840,120,0,165,1320,4620,9240,11550,9240,4620,1320,
 165,1980,7920]

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Last modified November 17 08:39 EST 2019. Contains 329217 sequences. (Running on oeis4.)