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A062653 Every divisor (except 1) contains the digit 2. 1
2, 23, 29, 127, 211, 223, 227, 229, 233, 239, 241, 251, 254, 257, 263, 269, 271, 277, 281, 283, 293, 421, 422, 482, 502, 521, 523, 526, 529, 542, 562, 727, 821, 823, 827, 829, 842, 929, 1021, 1042, 1123, 1129, 1201, 1213, 1217, 1223, 1229, 1231, 1237 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..48.

EXAMPLE

254 has divisors 1, 2, 127 and 254, all of which contain the digit 2

MATHEMATICA

fQ[n_, dgt_] := Union[ MemberQ[#, dgt] & /@ IntegerDigits@ Rest@ Divisors@ n][[1]]; Select[ Range[2, 1300], fQ[#, 2] &]  (* Robert G. Wilson v, Jun 11 2014 *)

CROSSREFS

Sequence in context: A034843 A084373 A107148 * A208272 A306086 A045708

Adjacent sequences:  A062650 A062651 A062652 * A062654 A062655 A062656

KEYWORD

base,easy,nonn

AUTHOR

Erich Friedman, Jul 04 2001

STATUS

approved

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Last modified July 16 23:49 EDT 2019. Contains 325092 sequences. (Running on oeis4.)