A hierarchical sequence (W'3{2,2}cc - see A059126).

Terms

a(0) =24a(1) =384a(2) =24a(3) =6144a(4) =24a(5) =384a(6) =24a(7) =98304a(8) =24a(9) =384a(10) =24a(11) =6144a(12) =24a(13) =384a(14) =24a(15) =1572864a(16) =24a(17) =384a(18) =24a(19) =6144a(20) =24a(21) =384a(22) =24a(23) =98304a(24) =24a(25) =384a(26) =24a(27) =6144a(28) =24a(29) =384