a(n) = ceiling((3n+1/n)^n).A197717a(n) = ceiling((3n+1/n)^n).Terms a(0) =4a(1) =43a(2) =814a(3) =22519a(4) =811369a(5) =35946076a(6) =1888624972a(7) =114746269758External referencesoeis: A197717