a(n) = floor((4*n+1/n)^n).A197324a(n) = floor((4*n+1/n)^n).Terms a(0) =5a(1) =72a(2) =1876a(3) =69729a(4) =3363232a(5) =199205126a(6) =13982257728External referencesoeis: A197324