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 A030099 Numbers n such that n^3 has only odd digits. 5
 1, 11, 15, 33, 39, 71, 91, 173, 175, 179, 211, 259, 335, 3337, 4631, 5597, 7353, 12415, 21353, 22893, 25799, 69491, 110011, 124975, 199831, 227353, 237151, 462815, 492415, 708415, 1100033, 2393695, 2620611, 5088493, 5828415, 7204417, 8320335, 11164415, 11689633 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Giovanni Resta, Table of n, a(n) for n = 1..563 (terms < 10^19, first 75 terms from Reinhard Zumkeller, terms 76..151 from Max Alekseyev) MATHEMATICA fQ[n_] := Union@ OddQ@ IntegerDigits[n^3] == {True}; Select[2 Range[3*10^6] - 1, fQ] (* Robert G. Wilson v, Aug 13 2011 *) Select[Range[12*10^6], AllTrue[IntegerDigits[#^3], OddQ]&] (* The program uses the AllTrue function from Mathematica version 10 *) (* Harvey P. Dale, Apr 14 2015 *) PROG (Haskell) import Data.List (intersect) a030099 n = a030099_list !! (n-1) a030099_list = filter (null . (intersect "86420") . show . (^ 3)) [1, 3..] -- Reinhard Zumkeller, Aug 13 2011 CROSSREFS Cf. A000578, A030100, A034376, A052004. Sequence in context: A009407 A009433 A275242 * A085597 A316643 A097512 Adjacent sequences:  A030096 A030097 A030098 * A030100 A030101 A030102 KEYWORD nonn,base,nice AUTHOR STATUS approved

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Last modified October 28 04:06 EDT 2020. Contains 338048 sequences. (Running on oeis4.)