a(n) = max{A380114(n, k) : k = 0..n}.

Terms

a(0) =1a(1) =2a(2) =4a(3) =16a(4) =48a(5) =192a(6) =640a(7) =2560a(8) =8960a(9) =35840a(10) =129024a(11) =516096a(12) =1892352a(13) =7569408a(14) =28114944a(15) =112459776a(16) =421724160a(17) =1686896640a(18) =6372720640a(19) =25490882560a(20) =96865353728a(21) =387461414912