Number of (4+1) X (n+1) 0..1 arrays with no 2 X 2 subblock having x11-x00 less than x10-x01.

A251271

Number of (4+1) X (n+1) 0..1 arrays with no 2 X 2 subblock having x11-x00 less than x10-x01.

Terms

    a(0) =337a(1) =2058a(2) =9109a(3) =32636a(4) =100843a(5) =279718a(6) =715685a(7) =1722176a(8) =3954037a(9) =8757506a(10) =18871133a(11) =39828260a(12) =82762159a(13) =170015870a(14) =346360653a(15) =701430696a(16) =1414589161a(17) =2844655514a(18) =5709353797a(19) =11444200908a(20) =22920272755a(21) =45879723734a(22) =91806810133

External references