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A056467 formatted as a simple table:

n a(n)
1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 0
9 0
10 0
11 720
12 720
13 15120
14 15120
15 191520
16 191520
17 1905120
18 1905120
19 16435440
20 16435440
21 129230640
22 129229920
23 953029440
24 953028720
25 6711344640
26 6711329520
27 45674188560

[0,0,0,0,0,0,0,0,0,0,720,720,15120,15120,191520,
 191520,1905120,1905120,16435440,16435440,
 129230640,129229920,953029440,953028720,
 6711344640,6711329520,45674188560]

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Last modified December 19 12:50 EST 2009. Contains 171053 sequences.


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