a(0)=22; if n odd, a(n) = a(n-1)/2, otherwise a(n) = 4*a(n-1).

Terms

a(0) =22a(1) =11a(2) =44a(3) =22a(4) =88a(5) =44a(6) =176a(7) =88a(8) =352a(9) =176a(10) =704a(11) =352a(12) =1408a(13) =704a(14) =2816a(15) =1408a(16) =5632a(17) =2816a(18) =11264a(19) =5632a(20) =22528a(21) =11264a(22) =45056a(23) =22528a(24) =90112a(25) =45056a(26) =180224a(27) =90112a(28) =360448a(29) =180224