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A197975
Round((2*n+1/n)^n)
1
3, 20, 254, 4633, 110408, 3243618, 113177496, 4570858599, 209655304353, 10763674952098, 611433842280388, 38071427445729200, 2578294348444597267, 188670154792420320214, 14834716200104606205407, 1247263229999781126495328, 111661618863544248806155259
OFFSET
1,1
LINKS
MATHEMATICA
Table[Round[(2n+1/n)^n], {n, 20}] (* Harvey P. Dale, May 28 2018 *)
PROG
(Magma) [Round((2*n+1/n)^n): n in [1..20]]
CROSSREFS
Sequence in context: A183607 A331504 A197322 * A210906 A355215 A193194
KEYWORD
nonn
AUTHOR
Vincenzo Librandi, Oct 20 2011
EXTENSIONS
Corrected and extended by Harvey P. Dale, May 28 2018
STATUS
approved