A197322 a(n) = floor((2*n+1/n)^n).

3, 20, 254, 4632, 110408, 3243617, 113177496, 4570858599, 209655304352, 10763674952097, 611433842280387, 38071427445729200, 2578294348444597266, 188670154792420320214, 14834716200104606205407, 1247263229999781126495327, 111661618863544248806155259

Offset: 1

Author

Vincenzo Librandi, Oct 17 2011

Keywords

• nonn

Links

• Vincenzo Librandi, Table of n, a(n) for n = 1..300

Crossrefs

Cf. A014052.

Programs

Magma

[Floor((2*n+1/n)^n): n in [1..20]];

Mathematica

Table[Floor[(2n+1/n)^n],{n,20}] (* Harvey P. Dale, Mar 25 2018 *)