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A061116
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Numbers coprime to each of their decimal digits.
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3
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11, 13, 17, 19, 21, 23, 27, 29, 31, 37, 41, 43, 47, 49, 51, 53, 57, 59, 61, 67, 71, 73, 79, 81, 83, 87, 89, 91, 97, 111, 113, 117, 119, 121, 127, 131, 133, 137, 139, 141, 143, 149, 151, 157, 161, 163, 167, 169, 171, 173, 177, 179, 181, 187, 191, 193, 197, 199, 211
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OFFSET
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1,1
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COMMENTS
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A138707(a(n)) = 1; subsequence of A138708. - Reinhard Zumkeller, Mar 26 2008
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LINKS
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Table of n, a(n) for n=1..59.
Index entries for 10-automatic sequences.
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EXAMPLE
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27 is a member as 2 and 7 both are coprime to 27. 53 is a member as 5 and 3 both are coprime to 53.
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MAPLE
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for n from 2 to 500 do it1 := convert(n, base, 10): flag := 1: for k from 1 to nops(it1) do if igcd(n, it1[k])<>1 then flag := 0 fi: od: if flag=1 then printf(`%d, `, n) fi: od:
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MATHEMATICA
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Select[Range[11, 191, 2], CoprimeQ[Product[i, {i, IntegerDigits[#]}], #] &] (* Arkadiusz Wesolowski, May 19 2012 *)
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CROSSREFS
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Sequence in context: A031979 A055239 A138708 * A333237 A048388 A068191
Adjacent sequences: A061113 A061114 A061115 * A061117 A061118 A061119
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KEYWORD
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nonn,base
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AUTHOR
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Amarnath Murthy, Apr 21 2001
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EXTENSIONS
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More terms from James A. Sellers, Apr 23 2001
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STATUS
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approved
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