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A054907 formatted as a simple table:

n a(n)
0 1
1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 1
9 0
10 0
11 0
12 1
13 0
14 1
15 1
16 3
17 1
18 4
19 3
20 12
21 12
22 28
23 49
24 180
25 368

[1,0,0,0,0,0,0,0,1,0,0,0,1,0,1,1,3,1,4,3,12,12,28,
 49,180,368]

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Last modified December 16 17:18 EST 2009. Contains 170825 sequences.


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