Number of nX4 0..1 arrays with every element equal to 0, 2, 3, 5 or 6 king-move adjacent elements, with upper left element zero.

A298378

Number of nX4 0..1 arrays with every element equal to 0, 2, 3, 5 or 6 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =1a(1) =18a(2) =18a(3) =47a(4) =172a(5) =504a(6) =1502a(7) =5011a(8) =16723a(9) =55130a(10) =184504a(11) =619998a(12) =2084868a(13) =7024818a(14) =23676837a(15) =79847524a(16) =269324641a(17) =908631125a(18) =3065973546a(19) =10346238353a(20) =34915387305a(21) =117832494393a(22) =397671686820

External references