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A159667
For n >= 1, a(n) =
A159666
(n)/n.
+0
2
1, 2, 6, 26, 133, 905, 6521, 57126, 544820, 5878219, 66851119, 881424550, 11803494823, 175906313032, 2767829058956, 47008174824136, 821285150996811, 15816596073011143, 308160754687446289, 6498330632792677804
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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.
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