Number of (n+4) X 11 0..2 matrices with each 5 X 5 subblock idempotent.

Terms

a(0) =54070a(1) =31702a(2) =36576a(3) =39450a(4) =41120a(5) =42214a(6) =50748a(7) =64133a(8) =80045a(9) =97220a(10) =115074a(11) =141044a(12) =179978a(13) =234400a(14) =305570a(15) =394164a(16) =508295a(17) =660924a(18) =867536a(19) =1144876a(20) =1510365a(21) =1989537a(22) =2620887a(23) =3458395a(24) =4572786a(25) =6052206a(26) =8010335a(27) =10599348a(28) =14025400