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A107774
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a(1)=3, a(n) = smallest integer not previously used which contains a digit from a(n-1).
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9
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3, 13, 1, 10, 0, 20, 2, 12, 11, 14, 4, 24, 21, 15, 5, 25, 22, 23, 26, 6, 16, 17, 7, 27, 28, 8, 18, 19, 9, 29, 32, 30, 31, 33, 34, 35, 36, 37, 38, 39, 43, 40, 41, 42, 44, 45, 46, 47, 48, 49, 54, 50, 51, 52, 53, 55, 56, 57, 58, 59, 65, 60, 61, 62, 63, 64, 66, 67, 68, 69, 76, 70
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OFFSET
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1,1
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COMMENTS
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LINKS
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MATHEMATICA
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f[l_] := Block[{c = 0}, While[ MemberQ[l, c] || Intersection @@ IntegerDigits /@{Last[l], c}=={}, c++ ]; Return[Append[l, c]]]; Nest[f, {3}, 70] (* Ray Chandler, Jul 19 2005 *)
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CROSSREFS
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KEYWORD
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base,nonn
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AUTHOR
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STATUS
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approved
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