Number of nX4 0..1 arrays with every element unequal to 0, 1, 3 or 6 king-move adjacent elements, with upper left element zero.

A304129

Number of nX4 0..1 arrays with every element unequal to 0, 1, 3 or 6 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =5a(1) =17a(2) =19a(3) =44a(4) =80a(5) =140a(6) =244a(7) =436a(8) =800a(9) =1444a(10) =2584a(11) =4630a(12) =8328a(13) =15032a(14) =27058a(15) =48590a(16) =87400a(17) =157336a(18) =283092a(19) =509306a(20) =916198a(21) =1648190a(22) =2965634a(23) =5335868a(24) =9599288a(25) =17270130a(26) =31071812a(27) =55902190a(28) =100575652a(29) =180948570

External references