Number of (n+5)X7 0..2 matrices with each 6X6 subblock idempotent.

Terms

a(0) =396769a(1) =134036a(2) =166962a(3) =187090a(4) =197423a(5) =201378a(6) =204289a(7) =266279a(8) =367311a(9) =489443a(10) =621291a(11) =756082a(12) =894557a(13) =1094178a(14) =1393566a(15) =1815237a(16) =2368477a(17) =3055411a(18) =3880868a(19) =4905067a(20) =6228094a(21) =7972961a(22) =10270056a(23) =13252964a(24) =17062095a(25) =21894549a(26) =28048752