Number of nX7 0..1 arrays with every element unequal to 1, 2 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

A317862

Number of nX7 0..1 arrays with every element unequal to 1, 2 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

Terms

    a(0) =8a(1) =102a(2) =164a(3) =851a(4) =2616a(5) =9045a(6) =33238a(7) =116271a(8) =405766a(9) =1489264a(10) =5416535a(11) =20000458a(12) =73575709a(13) =273375552a(14) =1015670766a(15) =3790505262a(16) =14158662304a(17) =52983894317a(18) =198495708632a(19) =744119241519

External references