Number of n X 3 0..1 arrays with every element unequal to 0, 1, 3 or 8 king-move adjacent elements, with upper left element zero.

A304216

Number of n X 3 0..1 arrays with every element unequal to 0, 1, 3 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =3a(1) =7a(2) =10a(3) =17a(4) =32a(5) =56a(6) =93a(7) =159a(8) =279a(9) =484a(10) =829a(11) =1426a(12) =2468a(13) =4265a(14) =7349a(15) =12669a(16) =21870a(17) =37749a(18) =65116a(19) =112324a(20) =193813a(21) =334427a(22) =576983a(23) =995444a(24) =1717497a(25) =2963334a(26) =5112744a(27) =8821129a(28) =15219457a(29) =26258869

External references