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

A298631

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

Terms

    a(0) =1a(1) =17a(2) =5a(3) =15a(4) =25a(5) =45a(6) =81a(7) =186a(8) =382a(9) =832a(10) =1778a(11) =3817a(12) =8229a(13) =17739a(14) =38337a(15) =82675a(16) =178602a(17) =385421a(18) =832808a(19) =1798457a(20) =3885412a(21) =8392104a(22) =18129623a(23) =39164407a(24) =84609478a(25) =182786178a(26) =394886144a(27) =853110433a(28) =1843063214a(29) =3981796704

External references