Card-matching numbers (Dinner-Diner matching numbers).

Terms

a(0) =1a(1) =9a(2) =8a(3) =6a(4) =0a(5) =1a(6) =4752a(7) =10752a(8) =11776a(9) =7680a(10) =3936a(11) =1024a(12) =384a(13) =0a(14) =16a(15) =17927568a(16) =64105344a(17) =109524960a(18) =117863424a(19) =89474544a(20) =49828608a(21) =21352896a(22) =6718464a(23) =1854576a(24) =279936a(25) =69984a(26) =0a(27) =1296a(28) =248341303296