Number of (n+2) X 4 binary arrays with every 3 X 3 subblock commuting with each horizontal and vertical neighbor 3 X 3 subblock.

A190026

Number of (n+2) X 4 binary arrays with every 3 X 3 subblock commuting with each horizontal and vertical neighbor 3 X 3 subblock.

Terms

    a(0) =112a(1) =45a(2) =79a(3) =155a(4) =235a(5) =295a(6) =355a(7) =423a(8) =531a(9) =740a(10) =1037a(11) =1434a(12) =1992a(13) =2706a(14) =3628a(15) =4920a(16) =6665a(17) =9015a(18) =12293a(19) =16738a(20) =22710a(21) =30902a(22) =42006a(23) =56987a(24) =77466a(25) =105302a(26) =142987a(27) =194362a(28) =264198a(29) =358864

External references