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A189824 Decimal expansion of Pogson's ratio 100^(1/5). 2
2, 5, 1, 1, 8, 8, 6, 4, 3, 1, 5, 0, 9, 5, 8, 0, 1, 1, 1, 0, 8, 5, 0, 3, 2, 0, 6, 7, 7, 9, 9, 3, 2, 7, 3, 9, 4, 1, 5, 8, 5, 1, 8, 1, 0, 0, 7, 8, 2, 4, 7, 5, 4, 2, 8, 6, 7, 9, 8, 8, 8, 4, 2, 0, 9, 0, 8, 2, 4, 3, 2, 4, 7, 7, 2, 3, 5, 6, 1, 3, 0, 8, 4, 5, 3, 8, 5, 1, 0, 0, 8, 8, 7, 7, 7, 9, 6, 9, 5, 9, 1, 9, 1, 6, 9 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Ratio appearing in the definition of the astronomical magnitude (brightness) scale.

LINKS

G. C. Greubel, Table of n, a(n) for n = 1..10000

Eric Weisstein's World of Mathematics, Pogson's Ratio

EXAMPLE

2.511886431509580111085032067799...

MATHEMATICA

First[RealDigits[100^(1/5), 10, 200]]

PROG

(PARI) 10^.4 \\ Charles R Greathouse IV, Jan 15 2015

(MAGMA) 10^(2/5) // G. C. Greubel, Jan 14 2018

CROSSREFS

Sequence in context: A181779 A024548 A197737 * A197814 A091772 A275479

Adjacent sequences:  A189821 A189822 A189823 * A189825 A189826 A189827

KEYWORD

nonn,easy,cons

AUTHOR

Eric W. Weisstein, Apr 28 2011

STATUS

approved

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Last modified September 25 21:12 EDT 2018. Contains 315425 sequences. (Running on oeis4.)