Number of nX5 0..1 arrays with every element equal to 1, 2, 4 or 5 king-move adjacent elements, with upper left element zero.

A297956

Number of nX5 0..1 arrays with every element equal to 1, 2, 4 or 5 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =3a(1) =23a(2) =47a(3) =233a(4) =681a(5) =2596a(6) =11623a(7) =39801a(8) =149442a(9) =616286a(10) =2335635a(11) =8904387a(12) =34861648a(13) =135228611a(14) =521631430a(15) =2019356359a(16) =7839971399a(17) =30360460809a(18) =117476386060a(19) =455396350820

External references