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 A205770 Powers of fifth root of 100, rounded to the nearest integer. 1
 1, 3, 6, 16, 40, 100, 251, 631, 1585, 3981, 10000, 25119, 63096, 158489, 398107, 1000000, 2511886, 6309573, 15848932, 39810717, 100000000, 251188643, 630957344, 1584893192, 3981071706, 10000000000, 25118864315, 63095734448, 158489319246, 398107170553, 1000000000000 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS The fifth root of 100, known as Pogson's ratio, is the ratio between successive stellar magnitudes. LINKS Chai Wah Wu, Table of n, a(n) for n = 0..1000 Eric Weisstein's World of Mathematics, Pogson's Ratio MATHEMATICA Table[Round[100^(n/5)], {n, 0, 30}] (* G. C. Greubel, Jan 14 2018 *) PROG (PARI) a(n)=round(100^(n/5)) \\ Charles R Greathouse IV, Jan 31 2012 (Python) from gmpy2 import iroot def A205770(n): m = 100**n i = iroot(m, 5)[0] return int(i) + int(32*m >= (1+2*i)**5) # Chai Wah Wu, Aug 16 2016 (Magma) [Round(100^(n/5)): n in [0..30]]; // G. C. Greubel, Jan 14 2018 CROSSREFS Bisection of A018142, ratio is A189824. Sequence in context: A188442 A046211 A239980 * A301959 A018022 A166536 Adjacent sequences: A205767 A205768 A205769 * A205771 A205772 A205773 KEYWORD nonn,easy AUTHOR Franklin T. Adams-Watters, Jan 31 2012 STATUS approved

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Last modified December 3 03:10 EST 2023. Contains 367531 sequences. (Running on oeis4.)