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 A050505 Unlucky numbers. 25
 2, 4, 5, 6, 8, 10, 11, 12, 14, 16, 17, 18, 19, 20, 22, 23, 24, 26, 27, 28, 29, 30, 32, 34, 35, 36, 38, 39, 40, 41, 42, 44, 45, 46, 47, 48, 50, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 64, 65, 66, 68, 70, 71, 72, 74, 76, 77, 78, 80, 81, 82, 83, 84, 85, 86, 88, 89, 90, 91, 92 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS A145649(a(n)) = 0; complement of A000959. - Reinhard Zumkeller, Oct 15 2008 LINKS Michael De Vlieger, Table of n, a(n) for n = 1..10000 FORMULA Numbers deleted in creating the lucky numbers, numbers not in A000959. MATHEMATICA L = Table[2 i + 1, {i, 0, 50}]; For[n = 2, n < Length[L], r = L[[n++]]; L = ReplacePart[L, Table[r i -> Nothing, {i, 1, Length[L]/r}]]]; Complement[Range@ Max@ L, L] (* Michael De Vlieger, Feb 25 2017, after Jean-François Alcover at A000959 *) CROSSREFS Cf. A000959. Sequence in context: A176554 A284895 A285354 * A047262 A285143 A274436 Adjacent sequences:  A050502 A050503 A050504 * A050506 A050507 A050508 KEYWORD nonn,easy AUTHOR Asher Auel (asher.auel(AT)reed.edu), Dec 16 1999 STATUS approved

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Last modified January 19 09:51 EST 2021. Contains 340269 sequences. (Running on oeis4.)