Number of (n+3) X 8 0..1 matrices with each 4 X 4 subblock idempotent.

Terms

a(0) =990a(1) =611a(2) =728a(3) =861a(4) =974a(5) =1233a(6) =1614a(7) =2099a(8) =2665a(9) =3459a(10) =4600a(11) =6193a(12) =8316a(13) =11198a(14) =15183a(15) =20724a(16) =28348a(17) =38815a(18) =53225a(19) =73135a(20) =100625a(21) =138539a(22) =190817a(23) =262960a(24) =362545a(25) =499997a(26) =689677a(27) =951451a(28) =1312758a(29) =1811466