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 A156345 Nonprimes with the same number of even digits and prime digits. 0
 0, 1, 9, 10, 12, 20, 21, 22, 34, 36, 38, 45, 54, 56, 58, 63, 65, 74, 76, 78, 85, 87, 90, 91, 92, 99, 100, 102, 110, 111, 112, 119, 120, 121, 122, 129, 134, 136, 138, 143, 145, 147, 154, 156, 158, 165, 174, 176, 178, 183, 185, 187, 190, 192, 200, 201, 202, 209, 210 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS Even digits are 2, 4, 6 or 8. Prime digits are 2, 3, 5 or 7. LINKS EXAMPLE 0(number=0), 1(number=0), 9(number=0), 10(number=0), 12(number=1), 20(number=1), 21(number=1), 22(number=2), 34(number=1), etc. MATHEMATICA okQ[n_]:=Module[{idn=IntegerDigits[n]}, !PrimeQ[n] && Count[idn, _?PrimeQ] == Count[idn, _?EvenQ]-Count[idn, 0]]; Select[Range[0, 250], okQ] (* Harvey P. Dale, Jan 12 2012 *) CROSSREFS Cf. A141468. Sequence in context: A158581 A343258 A078459 * A078390 A216780 A279731 Adjacent sequences:  A156342 A156343 A156344 * A156346 A156347 A156348 KEYWORD nonn,base,less AUTHOR Juri-Stepan Gerasimov, Feb 08 2009 EXTENSIONS Removed 69, inserted 99 and 209 . R. J. Mathar, Feb 13 2009 STATUS approved

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Last modified May 13 12:02 EDT 2021. Contains 343839 sequences. (Running on oeis4.)