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A143716
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(0, 1, 2, 3, 2^2, 5, 2*3, 7, 2^3, 3^2, 2*5, 11, 2^2*3,..) becomes (1, 2, 3, 4, 5^6, 7, 8*9, 10, 11^12, 13^14, 15*16, 17, 18^19*20,..).
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3
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1, 2, 3, 4, 15625, 7, 72, 10, 313842837672, 393737638569928, 240, 17, 14164706907106753527152640
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OFFSET
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1,2
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COMMENTS
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The list of the bases and exponents of the prime factorizations is replaced by the list of positive integers, but the operations stay fixed. - R. J. Mathar, Mar 22 2016
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LINKS
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EXAMPLE
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a(5)=5^6=15625.
a(6)=7.
a(7)=8*9=72.
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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