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 A111654 n appears n-th composite number times. 4
 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,5 COMMENTS n appears A002808(n) times. LINKS Table of n, a(n) for n=1..94. MATHEMATICA Module[{nn=20, comps, len}, comps=Select[Range[nn], CompositeQ]; len=Length[ comps]; Flatten[Table[#[[1]], {#[[2]]}]&/@Thread[{Range[len], comps}]]] (* Harvey P. Dale, Aug 17 2014 *) CROSSREFS Cf. A002808, A111653, A111655. Sequence in context: A259361 A111854 A132085 * A264749 A240567 A067099 Adjacent sequences: A111651 A111652 A111653 * A111655 A111656 A111657 KEYWORD easy,less,nonn AUTHOR Jonathan Vos Post, Aug 12 2005 STATUS approved

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Last modified April 16 04:02 EDT 2024. Contains 371696 sequences. (Running on oeis4.)