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A062668 Composite and every divisor (except 1) contains the digit 3. 2
39, 93, 309, 339, 393, 403, 713, 933, 939, 993, 1137, 1293, 1317, 1329, 1333, 1339, 1369, 1389, 1643, 1703, 1839, 1893, 2263, 2319, 2369, 2573, 3013, 3029, 3039, 3071, 3093, 3099, 3107, 3117, 3139, 3151, 3189, 3193, 3197, 3279, 3309, 3369, 3419, 3459 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..43.

EXAMPLE

93 has divisors 1, 3, 31 and 93, all of which contain the digit 3

MATHEMATICA

fQ[n_, dgt_] := Union[ MemberQ[#, dgt] & /@ IntegerDigits@ Rest@ Divisors@ n][[1]]; Select[ Range[2, 3460], !PrimeQ[#] && fQ[#, 3] &] (* Robert G. Wilson v, Jun 11 2014 *)

CROSSREFS

Sequence in context: A039422 A043245 A044025 * A158339 A211499 A126077

Adjacent sequences:  A062665 A062666 A062667 * A062669 A062670 A062671

KEYWORD

base,easy,nonn

AUTHOR

Erich Friedman, Jul 04 2001

STATUS

approved

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Last modified September 16 10:46 EDT 2019. Contains 327094 sequences. (Running on oeis4.)