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A055602 formatted as a simple table:

n a(n)
1 0
2 4
3 45
4 432
5 4200
6 43200
7 476280
8 5644800
9 71850240
10 979776000
11 14270256000
12 221298739200
13 3642807168000
14 63465795993600
15 1167099373440000
16 22596613079040000
17 459548157100032000
18 9795631769763840000

[0,4,45,432,4200,43200,476280,5644800,71850240,
 979776000,14270256000,221298739200,3642807168000,
 63465795993600,1167099373440000,22596613079040000,
 459548157100032000,9795631769763840000]

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Last modified December 18 21:37 EST 2009. Contains 171024 sequences.


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