Number of n X 4 0..1 arrays with no element equal to more than two of its horizontal, diagonal or antidiagonal neighbors and with new values introduced in order 0 sequentially upwards.

A281465

Number of n X 4 0..1 arrays with no element equal to more than two of its horizontal, diagonal or antidiagonal neighbors and with new values introduced in order 0 sequentially upwards.

Terms

    a(0) =8a(1) =37a(2) =39a(3) =96a(4) =207a(5) =405a(6) =897a(7) =1975a(8) =4154a(9) =8884a(10) =19297a(11) =41447a(12) =88670a(13) =190913a(14) =411053a(15) =882410a(16) =1895974a(17) =4078246a(18) =8765802a(19) =18835918a(20) =40491783a(21) =87045948a(22) =187087510a(23) =402129300a(24) =864407625a(25) =1858020929a(26) =3993687963a(27) =8584396666a(28) =18452096569

External references