Number of nX3 0..1 arrays with every element unequal to 1, 2, 3, 4 or 8 king-move adjacent elements, with upper left element zero.

A305283

Number of nX3 0..1 arrays with every element unequal to 1, 2, 3, 4 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =1a(1) =23a(2) =55a(3) =279a(4) =895a(5) =3696a(6) =13289a(7) =51734a(8) =192418a(9) =735241a(10) =2765966a(11) =10501378a(12) =39658770a(13) =150239389a(14) =568125614a(15) =2150618007a(16) =8136093736a(17) =30791019947a(18) =116504256865a(19) =440871748994

External references