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Search: id:A020045
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A020045 Nearest integer to GAMMA(n+1/2)/GAMMA(1/2). +0
1
1, 1, 1, 2, 7, 30, 162, 1056, 7918, 67304, 639384, 6713531, 77205601, 965070017, 13028445232, 188912455860, 2928143065834, 48314360586264, 845501310259627, 15641774239803107, 305014597676160594, 6252799252361292173 (list; graph; listen)
OFFSET

0,4

FORMULA

Also nearest integer (where .5 is rounded up) to (2n)!/(n!*2^(2n)) or A001813(n)/A000302(n). - Gerald McGarvey (gerald.mcgarvey(AT)comcast.net), Jan 20 2005

MAPLE

Digits := 64:f := proc(n, x) round(GAMMA(n+x)/GAMMA(x)); end;

CROSSREFS

Cf. A001813 A000302.

Sequence in context: A088128 A001053 A124552 this_sequence A020135 A102158 A049576

Adjacent sequences: A020042 A020043 A020044 this_sequence A020046 A020047 A020048

KEYWORD

nonn

AUTHOR

Simon Plouffe (simon.plouffe(AT)gmail.com)

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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