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A144123
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(0, 1, 2, 3, 2^2, 5, 2*3, 7, 2^3, 3^2, 2*5, 11, 2^2*3, 13,..) becomes (4, 6, 8, 9, 10^12, 14, 15*16, 18, 20^21, 22^24, 25*26, 27, 28^30*32, 33, ..).
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0
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4, 6, 8, 9, 1000000000000, 14, 240, 18, 2097152000000000000000000000, 165251092644282265779977014214656, 650, 27, 831554883865300668552224606420411230629920768, 33, 1190, 1368
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OFFSET
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1,1
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LINKS
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EXAMPLE
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10^12=1000000000000=a(5).
14=a(6).
15*16=240=a(7).
20^21=2097152000000000000000000000,
etc.
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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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Corrected (18 inserted) and extended by R. J. Mathar, Apr 28 2010
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STATUS
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approved
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