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A098459 Decimal expansion of G/2 + (1/8)*Pi*ln(2), where G is Catalan's constant (often also denoted K). +0
1
7, 3, 0, 1, 8, 1, 0, 5, 8, 3, 7, 6, 5, 5, 9, 7, 7, 3, 8, 3, 9, 8, 8, 7, 8, 6, 9, 7, 4, 5, 8, 9, 3, 7, 9, 8, 8, 0, 4, 3, 9, 7, 6, 4, 9, 6, 8, 6, 9, 9, 6, 8, 5, 3, 9, 2, 3, 9, 7, 3, 4, 6, 6, 4, 6, 0, 1, 7, 0, 0, 7, 8, 5, 3, 5, 2, 2, 0, 1, 3, 3, 0, 4, 3, 4, 6, 9, 3, 7, 6, 6, 6, 4, 3, 9, 0, 4, 3, 1, 2 (list; cons; graph; listen)
OFFSET

0,1

LINKS

Eric Weisstein's World of Mathematics, Ahmed's Integral

FORMULA

The result of the integral from x=0 to x=1 of arctan(x) / (x*(x^2+1))

EXAMPLE

.7301810583765597738398878697...

CROSSREFS

Sequence in context: A100983 A103237 A021582 this_sequence A019648 A154159 A083803

Adjacent sequences: A098456 A098457 A098458 this_sequence A098460 A098461 A098462

KEYWORD

nonn,cons,easy

AUTHOR

Mark Hudson (mrmarkhudson(AT)hotmail.com), Sep 08 2004

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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