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A054913 formatted as a simple table:

n a(n)
1 1
2 0
3 0
4 12
5 432
6 20640
7 1635360
8 234661728
9 63873105408
10 33808605100800
11 35254518078942720
12 72922216118695037952
13 300312950395670884227072
14 2467417543490126920783534080
15 40490542668157619621325008117760

[1,0,0,12,432,20640,1635360,234661728,63873105408,
 33808605100800,35254518078942720,
 72922216118695037952,300312950395670884227072,
 2467417543490126920783534080,
 40490542668157619621325008117760]

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.


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