Number of (n+3) X 8 0..2 matrices with each 4 X 4 subblock idempotent.

Terms

a(0) =4257a(1) =3123a(2) =3775a(3) =4209a(4) =4498a(5) =5727a(6) =7575a(7) =9778a(8) =12188a(9) =15746a(10) =21068a(11) =28510a(12) =38276a(13) =51515a(14) =69988a(15) =95816a(16) =131320a(17) =179974a(18) =247009a(19) =339781a(20) =467963a(21) =644706a(22) =888388a(23) =1224747a(24) =1689190a(25) =2330279a(26) =3214950a(27) =4435881a(28) =6121153a(29) =8447413