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A007958
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Even numbers with at least one odd digit.
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1
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10, 12, 14, 16, 18, 30, 32, 34, 36, 38, 50, 52, 54, 56, 58, 70, 72, 74, 76, 78, 90, 92, 94, 96, 98, 100, 102, 104, 106, 108, 110, 112, 114, 116, 118, 120, 122, 124, 126, 128, 130, 132, 134, 136, 138, 140, 142, 144, 146, 148
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refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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COMMENTS
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Old name was: Even numbers such that some permutation of digits is an odd number.
a(n) = A179083(n) for n <= 30. - Reinhard Zumkeller, Jun 28 2010
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LINKS
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Table of n, a(n) for n=1..50.
F. Smarandache, Only Problems, Not Solutions!
Index entries for 10-automatic sequences.
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FORMULA
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a(n) ~ 2n. - Charles R Greathouse IV, Oct 23 2015
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MATHEMATICA
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Select[2*Range[100], Or@@OddQ[IntegerDigits[#]]&] (* Harvey P. Dale, Apr 01 2013 *)
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PROG
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(PARI) is(n)=n%2==0 && vecsum(Set(digits(n)%2)) \\ Charles R Greathouse IV, Oct 23 2015
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CROSSREFS
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Sequence in context: A309539 A273492 A227870 * A179083 A092132 A088170
Adjacent sequences: A007955 A007956 A007957 * A007959 A007960 A007961
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KEYWORD
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nonn,base,easy
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AUTHOR
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R. Muller
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EXTENSIONS
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New name from Charles R Greathouse IV, Feb 14 2017, based on comment from Harvey P. Dale, Apr 01 2013
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STATUS
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approved
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