Number of 2Xn integer arrays with each element equal to the number of horizontal and antidiagonal neighbors less than or equal to itself.

A266056

Number of 2Xn integer arrays with each element equal to the number of horizontal and antidiagonal neighbors less than or equal to itself.

Terms

    a(0) =1a(1) =7a(2) =12a(3) =58a(4) =598a(5) =4427a(6) =26350a(7) =164148a(8) =1074794a(9) =7035874a(10) =45524948a(11) =294270860a(12) =1906419263a(13) =12357270209a(14) =80067019748a(15) =518700090254

External references