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 A282974 Numbers n such that A011546(n) is a prime. 1
 1, 2, 6, 12, 1902, 3971, 5827 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Round(k)=floor(k) or floor(k)+1, so if round(k)=floor(k) and floor(k) is a prime number, then round(k) is also prime. Thus 47577 = A005042(6) and 613373 = A005042(8) are also terms. The corresponding primes are in A282973. LINKS Eric Weisstein's World of Mathematics, Pi-Prime MATHEMATICA Do[If[PrimeQ[Round[Pi*10^(n-1)]], Print[n], {n, 17511}] CROSSREFS Cf. A000796, A005042, A011546, A282973. Sequence in context: A126293 A007668 A089415 * A181063 A161324 A226603 Adjacent sequences:  A282971 A282972 A282973 * A282975 A282976 A282977 KEYWORD nonn,base,more AUTHOR XU Pingya, Feb 25 2017 STATUS approved

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Last modified September 21 19:59 EDT 2019. Contains 327282 sequences. (Running on oeis4.)