Number of (n+4)X5 0..1 matrices with each 5X5 subblock idempotent.

Terms

a(0) =5682a(1) =2351a(2) =2662a(3) =3465a(4) =4405a(5) =5385a(6) =6713a(7) =8897a(8) =12393a(9) =17893a(10) =25853a(11) =36869a(12) =52253a(13) =74230a(14) =106404a(15) =154071a(16) =224107a(17) =325892a(18) =472847a(19) =684866a(20) =991959a(21) =1438581a(22) =2089095a(23) =3035865a(24) =4411494a(25) =6407917a(26) =9304859a(27) =13510805a(28) =19621025a(29) =28500115