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

A196781

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

Terms

    a(0) =1a(1) =3a(2) =17a(3) =39a(4) =135a(5) =427a(6) =1351a(7) =4319a(8) =13715a(9) =43607a(10) =138727a(11) =441175a(12) =1403139a(13) =4462583a(14) =14192759a(15) =45138911a(16) =143560379a(17) =456581095a(18) =1452116295a(19) =4618328471a(20) =14688188867a(21) =46714497719a(22) =148571365447a(23) =472518206415

External references