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A135937
a(1)=1. For n>=2, a(n) = product{d|a(n-1)} (d+1), where the product is over all positive divisors d of a(n-1).
+0
2
1, 2, 6, 168, 6623019333730800000
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Maintained by
N. J. A. Sloane
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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.
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