Number of (n+5) X 10 0..1 matrices with each 6 X 6 subblock idempotent.

Terms

a(0) =22096a(1) =7034a(2) =7295a(3) =8143a(4) =8880a(5) =9480a(6) =9946a(7) =11672a(8) =14594a(9) =18457a(10) =22982a(11) =27995a(12) =33345a(13) =40295a(14) =50032a(15) =63512a(16) =81392a(17) =104167a(18) =132157a(19) =166965a(20) =211369a(21) =269127a(22) =344634a(23) =442792a(24) =568799a(25) =729476a(26) =934410a(27) =1196970a(28) =1534900a(29) =1970858