Number of nX4 0..1 arrays with every element unequal to 1, 2, 3, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

A316736

Number of nX4 0..1 arrays with every element unequal to 1, 2, 3, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =2a(1) =33a(2) =36a(3) =95a(4) =410a(5) =392a(6) =1124a(7) =3964a(8) =5343a(9) =14856a(10) =41918a(11) =70345a(12) =185864a(13) =467659a(14) =898506a(15) =2269250a(16) =5397846a(17) =11232915a(18) =27428849a(19) =63595799a(20) =138488643a(21) =330375617a(22) =758055990a(23) =1692622361a(24) =3976459935a(25) =9093138520a(26) =20578182687a(27) =47876880000

External references