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A134369
a(n) = ((2n+1)!)^(n+1).
10
1, 36, 1728000, 645241282560000, 6292383221978976013516800000, 4045146997974190235742848547815424000000000000, 363046466970952735968096996065196818096105852014637875200000000000000
OFFSET
0,2
FORMULA
a(n) ~ 2^(2*(n+1)^2) * exp(13/24 - 2*n*(n+1)) * n^((n+1)*(4*n+3)/2) * Pi^((n+1)/2). - Vaclav Kotesovec, Oct 26 2017
MATHEMATICA
Table[((2n+1)!)^(n + 1), {n, 0, 10}]
KEYWORD
nonn
AUTHOR
Artur Jasinski, Oct 22 2007
STATUS
approved