Number of nX3 0..1 arrays with every element equal to 1, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero.

A298617

Number of nX3 0..1 arrays with every element equal to 1, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =0a(1) =4a(2) =0a(3) =7a(4) =7a(5) =25a(6) =88a(7) =187a(8) =491a(9) =1401a(10) =3453a(11) =9137a(12) =24444a(13) =63122a(14) =165783a(15) =437236a(16) =1142360a(17) =2996745a(18) =7872571a(19) =20629138a(20) =54106258a(21) =141985576a(22) =372329834a(23) =976570397a(24) =2561886798a(25) =6719327485a(26) =17624327541a(27) =46230283036a(28) =121259005863a(29) =318057911654

External references