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A062672 Composite and every divisor (except 1) contains the digit 5. 2
25, 125, 265, 295, 625, 755, 785, 1255, 1285, 1325, 1475, 1765, 1795, 2285, 2515, 2545, 2605, 2615, 2705, 2735, 2785, 2815, 2845, 2855, 2885, 2935, 2965, 2995, 3125, 3265, 3295, 3755, 3775, 3785, 3925, 4265, 4285, 4295, 4765, 5255, 5755, 5765, 6275 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..42.

EXAMPLE

25 has divisors 1, 5 and 25, all of which contain the digit 5

MATHEMATICA

fQ[n_, dgt_] := Union[ MemberQ[#, dgt] & /@ IntegerDigits@ Rest@ Divisors@ n][[1]]; Select[ Range[2, 6300], !PrimeQ[#] && fQ[#, 5] &] (* Robert G. Wilson v, Jun 11 2014 *)

CROSSREFS

Sequence in context: A146945 A044357 A044738 * A036321 A289337 A211581

Adjacent sequences:  A062669 A062670 A062671 * A062673 A062674 A062675

KEYWORD

base,easy,nonn

AUTHOR

Erich Friedman, Jul 04 2001

STATUS

approved

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Last modified October 21 11:15 EDT 2019. Contains 328294 sequences. (Running on oeis4.)