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

Terms

a(0) =1a(1) =9a(2) =8a(3) =6a(4) =0a(5) =1a(6) =297a(7) =672a(8) =736a(9) =480a(10) =246a(11) =64a(12) =24a(13) =0a(14) =1a(15) =13833a(16) =49464a(17) =84510a(18) =90944a(19) =69039a(20) =38448a(21) =16476a(22) =5184a(23) =1431a(24) =216a(25) =54a(26) =0a(27) =1a(28) =748521a(29) =3662976