Successive powers of the matrix A=[1,2;3,4] written by rows in groups of 4.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =7a(5) =10a(6) =15a(7) =22a(8) =37a(9) =54a(10) =81a(11) =118a(12) =199a(13) =290a(14) =435a(15) =634a(16) =1069a(17) =1558a(18) =2337a(19) =3406a(20) =5743a(21) =8370a(22) =12555a(23) =18298a(24) =30853a(25) =44966a(26) =67449a(27) =98302a(28) =165751a(29) =241570