Number of nX5 0..1 arrays with every element equal to 3, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

A298899

Number of nX5 0..1 arrays with every element equal to 3, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =0a(1) =3a(2) =3a(3) =10a(4) =32a(5) =120a(6) =471a(7) =2070a(8) =9055a(9) =39809a(10) =178728a(11) =805614a(12) =3628936a(13) =16427863a(14) =74247523a(15) =336094409a(16) =1520856812a(17) =6885288837a(18) =31164948670a(19) =141091227797a(20) =638704784849

External references