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 A325424 Complement of A036668: numbers not of the form 2^i*3^j*k, i + j even, (k,6) = 1. 9
 2, 3, 8, 10, 12, 14, 15, 18, 21, 22, 26, 27, 32, 33, 34, 38, 39, 40, 46, 48, 50, 51, 56, 57, 58, 60, 62, 69, 70, 72, 74, 75, 82, 84, 86, 87, 88, 90, 93, 94, 98, 104, 105, 106, 108, 110, 111, 118, 122, 123, 126, 128, 129, 130, 132, 134, 135, 136, 141, 142 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS These are the numbers 2x and 3x as x ranges through the numbers in A036668. Numbers whose squarefree part is divisible by exactly one of {2, 3}. - Peter Munn, Aug 24 2020 The asymptotic density of this sequence is 5/12. - Amiram Eldar, Sep 20 2020 LINKS Clark Kimberling, Table of n, a(n) for n = 1..10000 Eric Weisstein's World of Mathematics, Symmetric difference FORMULA (2 * {A036668}) union (3 * {A036668}). - Sean A. Irvine, May 19 2019 MATHEMATICA a = {1}; Do[AppendTo[a, NestWhile[# + 1 &, Last[a] + 1, Apply[Or, Map[MemberQ[a, #] &, Select[Flatten[{#/3, #/2}], IntegerQ]]] &]], {150}]; a     (* A036668 *) Complement[Range[Last[a]], a]  (* A325424 *) (* Peter J. C. Moses, Apr 23 2019 *) CROSSREFS Cf. A325417, A036668. Symmetric difference of: A003159 and A007417; A036554 and A145204\{0}. Sequence in context: A008522 A028732 A028751 * A057543 A190650 A000059 Adjacent sequences:  A325421 A325422 A325423 * A325425 A325426 A325427 KEYWORD nonn,easy AUTHOR Clark Kimberling, Apr 26 2019 STATUS approved

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Last modified July 23 17:41 EDT 2021. Contains 346259 sequences. (Running on oeis4.)