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A281197
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Least number m such that A247600(m) = n.
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3
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9, 7, 6, 998, 5, 6331, 15866, 39860, 100135, 251616, 636787, 1617099, 4124188, 10553076, 27066256, 69709243, 179992154, 465769460, 1208198239, 3140421185, 8179001679, 21338684878, 55762147707, 145935688930, 382465571795, 1003652346718
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listen;
history;
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OFFSET
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5,1
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LINKS
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FORMULA
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pi(n*a(n)) = a(n) + n.
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EXAMPLE
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pi(5*9) = 9 + 5.
pi(6*7) = 7 + 6.
pi(7*6) = 6 + 7.
pi(8*998) = 998 + 8.
pi(9*5) = 5 + 9.
...
pi(15*636787) = 636787 + 15.
pi(16*1617099) = 1617099 + 16.
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CROSSREFS
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KEYWORD
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nonn,more
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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