Number of 5Xn 0..1 arrays with every element equal to 0, 1 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero.

A301967

Number of 5Xn 0..1 arrays with every element equal to 0, 1 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero.

Terms

    a(0) =16a(1) =89a(2) =100a(3) =169a(4) =311a(5) =749a(6) =1803a(7) =4257a(8) =10353a(9) =25491a(10) =62623a(11) =154129a(12) =380187a(13) =938001a(14) =2314659a(15) =5713631a(16) =14105377a(17) =34823513a(18) =85976895a(19) =212277137a(20) =524117847a(21) =1294070913a(22) =3195138873a(23) =7889010751a(24) =19478522291a(25) =48093894353a(26) =118747410843

External references