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A250044
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Numbers n such that m = floor(n/8) is coprime to n and, if nonzero, m is also a term of the sequence.
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9
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1, 8, 9, 10, 11, 12, 13, 14, 15, 65, 67, 69, 71, 73, 74, 76, 77, 79, 81, 83, 87, 89, 90, 91, 92, 93, 94, 95, 97, 101, 103, 105, 106, 107, 108, 109, 110, 111, 113, 115, 117, 121, 122, 124, 127, 521, 522, 523, 524, 526, 527, 537
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OFFSET
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1,2
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COMMENTS
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See the comments in A250040 which all apply, except for the setting of the base, b=8. In particular, they define the property RTC(b).
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LINKS
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PROG
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(PARI) See the link
(PARI) is_rtc(n, b=8) = {while (((m=gcd(n\b, n)) == 1), if (m == 0, return (1)); if ((n=n\b) == 0, return (1)); ); return (0); } \\ Michel Marcus, Jan 18 2015
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CROSSREFS
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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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