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A250048 Numbers n such that m = floor(n/6) is coprime to n and, if nonzero, m is also a term of the sequence. 8
1, 6, 7, 8, 9, 10, 11, 37, 41, 43, 44, 45, 46, 47, 49, 51, 53, 55, 56, 58, 59, 61, 63, 67, 68, 69, 70, 71, 223, 224, 225, 226, 227, 247, 248, 249, 250, 251, 259, 260, 261, 262, 263, 265, 267, 269, 271, 272, 274, 277, 279, 281, 283, 284, 285, 286, 287, 295 (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=6. 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 A250040 for b=6

(PARI) is_rtc(n, b=6) =  {while (((m=gcd(n\b, n)) == 1), if (m == 0, return (1)); if ((n=n\b) == 0, return (1)); ); return (0); } \\ Michel Marcus, Jan 31 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), A250046 (b=7), A250050 (b=5).

Sequence in context: A120199 A162786 A269801 * A051053 A178868 A069838

Adjacent sequences:  A250045 A250046 A250047 * A250049 A250050 A250051

KEYWORD

nonn,base

AUTHOR

Stanislav Sykora, Jan 31 2015

STATUS

approved

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Last modified June 25 06:13 EDT 2017. Contains 288709 sequences.