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A250045
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Numbers n such that m = floor(n/8) is not coprime to n and, if nonzero, m is also a term of the sequence.
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9
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2, 3, 4, 5, 6, 7, 16, 18, 20, 22, 24, 27, 30, 32, 34, 36, 38, 40, 45, 48, 50, 51, 52, 54, 56, 63, 128, 130, 132, 134, 144, 146, 147, 148, 150, 160, 162, 164, 165, 166, 176, 178, 180, 182, 192, 194, 195, 196, 198, 216, 219, 222, 240, 242, 243, 244, 245, 246
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OFFSET
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1,1
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COMMENTS
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See the comments in A250041 which all apply, except for the setting of the base, b=8. In particular, they define the property RTNC(b).
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LINKS
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PROG
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(PARI) See the link
(PARI) is_rtnc(n, b=8) = {while (((m=gcd(n\b, n)) != 1), if (m == 0, return (1)); n = n\b; ); return (0); } \\ Michel Marcus, Jan 22 2015
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CROSSREFS
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Other lists of right-truncatable numbers with the property RTNC(b):
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KEYWORD
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nonn,base
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AUTHOR
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STATUS
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approved
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