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A018938
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Decimal expansion of e^Pi - Pi.
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3
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1, 9, 9, 9, 9, 0, 9, 9, 9, 7, 9, 1, 8, 9, 4, 7, 5, 7, 6, 7, 2, 6, 6, 4, 4, 2, 9, 8, 4, 6, 6, 9, 0, 4, 4, 4, 9, 6, 0, 6, 8, 9, 3, 6, 8, 4, 3, 2, 2, 5, 1, 0, 6, 1, 7, 2, 4, 7, 0, 1, 0, 1, 8, 1, 7, 2, 1, 6, 5, 2, 5, 9, 4, 4, 4, 0, 4, 2, 4, 3, 7, 8, 4, 8, 8, 8, 9, 3, 7, 1, 7, 1, 7, 2, 5, 4, 3, 2, 1
(list;
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internal format)
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OFFSET
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2,2
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COMMENTS
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Sum_{k>=0} A176696(k)/(2^k*k!)= e^Pi - Pi. - Jaume Oliver Lafont, Apr 24 2010
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REFERENCES
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J. H. Conway, personal communication.
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LINKS
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Harry J. Smith, Table of n, a(n) for n = 2..20000
Robert Munafo, Pi Day: the Second Approximation, RIES - Find Algebraic Equations, Given Their Solution.
Randall Munroe, e to the pi Minus pi, xkcd Web Comic #217, Jan 31 2007.
Simon Plouffe, exp(Pi)-Pi to 10000 digits
Simon Plouffe, exp(Pi)-Pi to 2000 digits
Wikipedia, Gelfond's constant.
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EXAMPLE
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19.99909997918947576726644298466904449606893684322510617247010181721652...
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MATHEMATICA
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RealDigits[E^Pi-Pi, 10, 120][[1]] (* Harvey P. Dale, Mar 09 2014 *)
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PROG
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(PARI) { default(realprecision, 20080); x=(exp(1)^Pi-Pi)/10; for (n=2, 20000, d=floor(x); x=(x-d)*10; write("b018938.txt", n, " ", d)); } \\ Harry J. Smith, May 14 2009
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CROSSREFS
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Cf. A018939 (continued fraction), A176696.
Sequence in context: A330119 A258815 A114054 * A292888 A111659 A102819
Adjacent sequences: A018935 A018936 A018937 * A018939 A018940 A018941
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KEYWORD
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nonn,cons
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AUTHOR
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N. J. A. Sloane
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STATUS
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approved
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