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 A241141 Numbers n such that n and 5n share at least one digit. 5
 5, 10, 15, 19, 20, 21, 24, 25, 30, 31, 35, 39, 40, 42, 45, 48, 49, 50, 51, 52, 53, 55, 57, 59, 60, 63, 65, 70, 73, 74, 75, 79, 80, 84, 85, 90, 94, 95, 98, 99, 100, 101, 102, 103, 104, 105, 106, 108, 110, 115, 119, 120, 122, 123, 124, 125, 126, 130, 135, 136, 139, 140, 142, 143, 145, 147, 148, 149, 150, 151, 153 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS All numbers n which are congruent to 0 (mod 5) have this characteristic. LINKS Table of n, a(n) for n=1..71. EXAMPLE 19 is in the sequence since 19 and 5*19 = 95 and together they share the digit 9. MATHEMATICA fQ[n_] := Intersection[ IntegerDigits[ n], IntegerDigits[5 n]] != {} && Mod[n, 5] != 0; Select[ Range[ 100], fQ] PROG (PARI) isok(n) = #setintersect(Set(digits(n)), Set(digits(5*n))); \\ Michel Marcus, Apr 17 2014 CROSSREFS Cf. A129845, A129846, A129848, A241142, A241143, A241144, A241145, A241146. Sequence in context: A313676 A344958 A313677 * A120686 A313678 A313679 Adjacent sequences: A241138 A241139 A241140 * A241142 A241143 A241144 KEYWORD base,easy,nonn AUTHOR Robert G. Wilson v, Apr 16 2014 STATUS approved

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Last modified April 20 09:04 EDT 2024. Contains 371799 sequences. (Running on oeis4.)