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A068185 formatted as a simple table:

n a(n)
1 0
2 2
3 3
4 81
5 1
6 102136
7 1
8 1389537
9 317811
10 4972825
11 0
12 12718670252691776
13 0
14 4506838380
15 11472991008
16 53560898629395777
17 0
18 514875062240230100091396
19 0
20 164997736300578242823300
21 241098942106440
22 0
23 0
24 3203410440031870942324022423896806853153460
25 1
26 0
27 61305790721611591

[0,2,3,81,1,102136,1,1389537,317811,4972825,0,
 12718670252691776,0,4506838380,11472991008,
 53560898629395777,0,514875062240230100091396,0,
 164997736300578242823300,241098942106440,0,0,
 3203410440031870942324022423896806853153460,1,0,
 61305790721611591]

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Last modified December 8 08:31 EST 2009. Contains 170430 sequences.


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