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 A107743 Numbers m such that m+(digit sum of m) is a composite number. 3
 2, 3, 4, 5, 6, 7, 8, 9, 12, 15, 17, 18, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 33, 36, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 54, 55, 57, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 72, 74, 75, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 93 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Complement of A047791. LINKS Reinhard Zumkeller, Table of n, a(n) for n = 1..10000 EXAMPLE A062028(21)=21+(2+1)=24=2*2*2*3, therefore 21 is a term. MATHEMATICA Select[Range[100], CompositeQ[#+Total[IntegerDigits[#]]]&] (* Harvey P. Dale, Oct 12 2016 *) PROG (Haskell) a107743 n = a107743_list !! (n-1) a107743_list = filter ((== 0) . a010051' . a062028) [1..] -- Reinhard Zumkeller, Sep 27 2014 CROSSREFS Cf. A007953, A062028. Cf. A010051. Sequence in context: A322511 A171827 A322002 * A116066 A261874 A334929 Adjacent sequences: A107740 A107741 A107742 * A107744 A107745 A107746 KEYWORD nonn,base AUTHOR Reinhard Zumkeller, May 23 2005 STATUS approved

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Last modified September 8 22:43 EDT 2024. Contains 375759 sequences. (Running on oeis4.)