a(n) = (ceiling(n*Pi))^n.A121275a(n) = (ceiling(n*Pi))^n.Terms a(0) =4a(1) =49a(2) =1000a(3) =28561a(4) =1048576a(5) =47045881a(6) =2494357888a(7) =208827064576External referencesoeis: A121275