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A063905
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Each prime p appears p times.
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3
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2, 2, 3, 3, 3, 5, 5, 5, 5, 5, 7, 7, 7, 7, 7, 7, 7, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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COMMENTS
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LINKS
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EXAMPLE
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a(A007504(4)) = prime(4) = 7 = a(17) and a(18) = a(A007504(4)+1) = prime(4+1) = prime(5) = 11.
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MATHEMATICA
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Table[PadRight[{}, p, p], {p, Prime[Range[8]]}]//Flatten (* Harvey P. Dale, Mar 13 2023 *)
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PROG
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(PARI) { n=0; p=1; for (m=1, 10^9, p=nextprime(p+1); for (i=1, p, write("b063905.txt", n++, " ", p); if (n==1000, break)); if (n==1000, break) ) } \\ Harry J. Smith, Sep 02 2009
(Haskell)
a063905 n = a063905_list !! (n-1)
a063905_list =
concat $ zipWith ($) (map replicate a000040_list) a000040_list
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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