T(n,k)=Half the number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock having exactly one duplicate clockwise edge difference.
A209787
T(n,k)=Half the number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock having exactly one duplicate clockwise edge difference.
Terms
- a(0) =64a(1) =576a(2) =576a(3) =5074a(4) =12492a(5) =5074a(6) =44948a(7) =266126a(8) =266126a(9) =44948a(10) =397734a(11) =5719838a(12) =13606964a(13) =5719838a(14) =397734a(15) =3520628a(16) =122871278a(17) =706149734a(18) =706149734a(19) =122871278a(20) =3520628a(21) =31161462a(22) =2641341716a(23) =36572974507a(24) =89046135210a(25) =36572974507
External references
- oeis: A209787