a(n) = 2 * (3*n+2)^(n-1).A385085a(n) = 2 * (3*n+2)^(n-1).Terms a(0) =1a(1) =2a(2) =16a(3) =242a(4) =5488a(5) =167042a(6) =6400000a(7) =296071778a(8) =16063620352External referencesoeis: A385085