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

Terms

a(0) =1a(1) =2a(2) =3a(3) =0a(4) =1a(5) =80a(6) =192a(7) =216a(8) =128a(9) =96a(10) =0a(11) =8a(12) =12096a(13) =46656a(14) =81648a(15) =93960a(16) =69984a(17) =40824a(18) =11664a(19) =5832a(20) =0a(21) =216a(22) =4783104a(23) =25214976a(24) =62705664a(25) =98648064a(26) =109859328a(27) =87588864a(28) =54411264a(29) =23887872