Number of nX4 0..1 arrays with every element unequal to 0, 2, 3, 6 or 7 king-move adjacent elements, with upper left element zero.

A305043

Number of nX4 0..1 arrays with every element unequal to 0, 2, 3, 6 or 7 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =1a(1) =13a(2) =9a(3) =11a(4) =20a(5) =17a(6) =25a(7) =70a(8) =67a(9) =101a(10) =292a(11) =325a(12) =485a(13) =1318a(14) =1679a(15) =2521a(16) =6284a(17) =8945a(18) =13753a(19) =31542a(20) =48955a(21) =77781a(22) =166412a(23) =275213a(24) =452509a(25) =918598a(26) =1587071a(27) =2691137a(28) =5266372a(29) =9359801

External references