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A154559 formatted as a simple table:

n a(n)
1 1
2 2
3 0
4 3
5 2
6 0
7 4
8 6
9 4
10 0
11 5
12 12
13 16
14 9
15 0
16 6
17 20
18 40
19 45
20 21
21 0
22 7
23 30
24 80
25 135
26 126
27 51
28 0
29 8
30 42
31 140
32 315
33 441
34 357
35 127
36 0
37 9
38 56
39 224
40 630
41 1176
42 1428
43 1016
44 323
45 0
46 10
47 72
48 336
49 1134
50 2646
51 4284
52 4572
53 2907
54 835
55 0

[1,2,0,3,2,0,4,6,4,0,5,12,16,9,0,6,20,40,45,21,0,
 7,30,80,135,126,51,0,8,42,140,315,441,357,127,0,9,
 56,224,630,1176,1428,1016,323,0,10,72,336,1134,
 2646,4284,4572,2907,835,0]

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Last modified December 2 11:54 EST 2009. Contains 167921 sequences.


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