Number of (n+4)X5 0..2 matrices with each 5X5 subblock idempotent.

Terms

a(0) =54182a(1) =20465a(2) =23914a(3) =32029a(4) =39001a(5) =43489a(6) =54070a(7) =79918a(8) =122542a(9) =187631a(10) =273520a(11) =383006a(12) =535709a(13) =762005a(14) =1106184a(15) =1626730a(16) =2385788a(17) =3471665a(18) =5021971a(19) =7252751a(20) =10500500a(21) =15253690a(22) =22196507a(23) =32295594a(24) =46934366a(25) =68138057a(26) =98892534