Number of (n+3) X 10 0..1 matrices with each 4 X 4 subblock idempotent.

Terms

a(0) =1852a(1) =1044a(2) =1232a(3) =1433a(4) =1614a(5) =1997a(6) =2526a(7) =3175a(8) =3917a(9) =4951a(10) =6416a(11) =8429a(12) =11076a(13) =14646a(14) =19563a(15) =26372a(16) =35700a(17) =48467a(18) =66013a(19) =90227a(20) =123621a(21) =169631a(22) =233029a(23) =320480a(24) =441157a(25) =607673a(26) =837409a(27) =1154415a(28) =1591910a(29) =2195730