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A134354
Integer nearest to expression 2 Pi n^(2 n + 1) e^(-2 n).
2
1, 4, 34, 553, 13929, 504211, 24804343, 1592201163, 129266762933, 12950610156346, 1569397748147942, 226278584786787360, 38281932323382968320, 7510129222684065660928, 1691120063240224255246336
OFFSET
1,2
COMMENTS
Integers in this sequence are <= (n!)^2 (see A001044)
FORMULA
a(n) = Round[2 Pi n^(2 n + 1)E^(-2 n)]
MATHEMATICA
Table[Round[N[2 Pi n^(2 n + 1)E^(-2 n)]], {n, 1, 30}]
CROSSREFS
Sequence in context: A222077 A081972 A158961 * A333981 A030243 A222789
KEYWORD
nonn
AUTHOR
Artur Jasinski, Oct 22 2007
STATUS
approved