Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,0,3,4,1 for x=0,1,2,3,4.

A196209

Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,0,3,4,1 for x=0,1,2,3,4.

Terms

    a(0) =17a(1) =43a(2) =42a(3) =305a(4) =751a(5) =2922a(6) =10986a(7) =35529a(8) =128823a(9) =472599a(10) =1687338a(11) =6179264a(12) =22255717a(13) =79844666a(14) =288974977a(15) =1050069655a(16) =3810469340a(17) =13776469497a(18) =49876710085a(19) =180636295947a(20) =654371189198

External references