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 A164898 First differences of numbers having only odd digits in their decimal representation. 2
 2, 2, 2, 2, 2, 2, 2, 2, 2, 12, 2, 2, 2, 2, 12, 2, 2, 2, 2, 12, 2, 2, 2, 2, 12, 2, 2, 2, 2, 12, 2, 2, 2, 2, 12, 2, 2, 2, 2, 12, 2, 2, 2, 2, 12, 2, 2, 2, 2, 12, 2, 2, 2, 2, 112, 2, 2, 2, 2, 12, 2, 2, 2, 2, 12, 2, 2, 2, 2, 12, 2, 2, 2, 2, 12, 2, 2, 2, 2, 112, 2, 2, 2, 2, 12, 2, 2, 2, 2, 12, 2, 2, 2, 2, 12 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS a(n) = A014261(n+1) - A014261(n); all terms are of the form (10^k + 8)/9, see A047855; a(n) > 2 iff A014261(n) mod 10 = 9. LINKS MATHEMATICA Differences[Select[Range[1000], Count[IntegerDigits[#], _?EvenQ]==0&]] (* Harvey P. Dale, Jan 03 2019 *) CROSSREFS Sequence in context: A252375 A339170 A257773 * A100801 A194310 A306227 Adjacent sequences:  A164895 A164896 A164897 * A164899 A164900 A164901 KEYWORD nonn,base AUTHOR Reinhard Zumkeller, Aug 30 2009 STATUS approved

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Last modified April 11 18:00 EDT 2021. Contains 342888 sequences. (Running on oeis4.)