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 A035100 Number of bits in binary expansion of n-th prime. 20
 2, 2, 3, 3, 4, 4, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 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, 8, 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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 1,1 LINKS Jamie Morken, Table of n, a(n) for n = 1..10000 (first 1000 terms from G. C. Greubel) MAPLE Digits := 40: [ seq(1+floor(evalf(log(ithprime(n))/log(2))), n=1..100) ]; MATHEMATICA f[n_]:=Length[IntegerDigits[Prime[n], 2]]; Table[f[n], {n, 5!}] (* Vladimir Joseph Stephan Orlovsky, Feb 07 2010 *) PROG (PARI) a(n)=#binary(prime(n)) \\ Charles R Greathouse IV, Sep 23 2012 CROSSREFS Cf. A000040, A000523, A029837, A070939, A162145. Sequence in context: A260254 A337853 A282711 * A303594 A085089 A228720 Adjacent sequences:  A035097 A035098 A035099 * A035101 A035102 A035103 KEYWORD nonn,easy AUTHOR STATUS approved

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Last modified July 26 10:48 EDT 2021. Contains 346294 sequences. (Running on oeis4.)