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A057638 formatted as a simple table:

n a(n)
1 17
2 89
3 2593
4 20809
5 208393
6 2663897
7 7336457
8 42453937
9 42453937
10 1506473153
11 24771906961
12 123737745289
13 152368449001
14 152368449001
15 4990160038937

[17,89,2593,20809,208393,2663897,7336457,42453937,
 42453937,1506473153,24771906961,123737745289,
 152368449001,152368449001,4990160038937]

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.


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