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

A298142

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

Terms

    a(0) =0a(1) =1a(2) =2a(3) =8a(4) =13a(5) =27a(6) =43a(7) =104a(8) =220a(9) =478a(10) =988a(11) =2085a(12) =4451a(13) =9505a(14) =20311a(15) =43151a(16) =91982a(17) =195977a(18) =418524a(19) =892675a(20) =1904782a(21) =4063008a(22) =8670687a(23) =18504003a(24) =39492308a(25) =84283520a(26) =179879444a(27) =383917687a(28) =819414074a(29) =1748947386

External references