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 A250046 Numbers n such that m = floor(n/7) is coprime to n and, if nonzero, m is also a term of the sequence. 11
 1, 7, 8, 9, 10, 11, 12, 13, 50, 51, 52, 53, 54, 55, 57, 59, 61, 64, 65, 67, 68, 71, 73, 78, 79, 80, 81, 82, 83, 85, 89, 92, 93, 94, 95, 96, 97, 351, 353, 358, 359, 361, 362, 365, 367, 369, 372, 373, 374, 375, 376, 377, 379, 383, 386, 387, 388, 389, 391, 400 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS See the comments in A250040 which all apply, except for the setting of the base, b=7. In particular, they define the property RTC(b). LINKS Stanislav Sykora, Table of n, a(n) for n = 1..10000 Stanislav Sykora, PARI/GP scripts for genetic threads, with code and comments. Wikipedia, Coprime integers PROG (PARI) See the link (PARI) is_rtc(n, b=7) =  {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 CROSSREFS Cf. A250040 (b=10), A250047. Other lists of right-truncatable numbers with the property RTC(b): A250036 (b=4), A250038 (b=16), A250042 (b=9), A250044 (b=8), A250048 (b=6), A250050 (b=5). Sequence in context: A182308 A023388 A065808 * A062947 A194345 A120208 Adjacent sequences:  A250043 A250044 A250045 * A250047 A250048 A250049 KEYWORD nonn,base AUTHOR Stanislav Sykora, Jan 15 2015 STATUS approved

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Last modified August 14 17:44 EDT 2018. Contains 313751 sequences. (Running on oeis4.)