Number of nX3 0..1 arrays with every element equal to 2, 3, 4 or 6 king-move adjacent elements, with upper left element zero.

A298065

Number of nX3 0..1 arrays with every element equal to 2, 3, 4 or 6 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =0a(1) =2a(2) =4a(3) =13a(4) =63a(5) =253a(6) =953a(7) =3802a(8) =15108a(9) =59873a(10) =236880a(11) =937385a(12) =3712010a(13) =14698259a(14) =58191701a(15) =230387790a(16) =912154985a(17) =3611432057a(18) =14298421381a(19) =56610374096a(20) =224132267313a(21) =887386743512

External references