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A250038
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Numbers n such that m = floor(n/16) 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, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 257, 259, 261, 263, 265, 267, 269, 271, 273, 274, 275, 276, 277, 278, 279, 280, 281, 282, 283, 284, 285, 286, 287, 289, 293, 295, 299, 301, 305, 306, 307, 308, 309, 310, 311, 312, 313, 314
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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=16. In particular, they define the property RTC(b).
This particular list is an infinite subset of A248501.
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LINKS
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PROG
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(PARI) See the link.
(PARI) is_rtc(n, b=16) = {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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