Number of nX4 0..1 arrays with every element unequal to 0, 1, 3, 6 or 8 king-move adjacent elements, with upper left element zero.

A305478

Number of nX4 0..1 arrays with every element unequal to 0, 1, 3, 6 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =5a(1) =17a(2) =21a(3) =48a(4) =98a(5) =192a(6) =368a(7) =732a(8) =1480a(9) =2932a(10) =5776a(11) =11486a(12) =22896a(13) =45464a(14) =90186a(15) =179214a(16) =356304a(17) =707856a(18) =1405988a(19) =2793618a(20) =5551294a(21) =11029574a(22) =21913242a(23) =43539452a(24) =86510224a(25) =171885810a(26) =341514604a(27) =678553342a(28) =1348218756a(29) =2678763818

External references