Number of (n+1)X(7+1) 0..3 arrays with no 2X2 subblock having the sum of its diagonal elements greater than the absolute difference of its antidiagonal elements.
A251054
Number of (n+1)X(7+1) 0..3 arrays with no 2X2 subblock having the sum of its diagonal elements greater than the absolute difference of its antidiagonal elements.
Terms
- a(0) =29759a(1) =118925a(2) =237143a(3) =533327a(4) =1045337a(5) =2129846a(6) =4118693a(7) =8207451a(8) =16293926a(9) =33460774a(10) =69949629a(11) =150556699a(12) =329921966a(13) =735973997a(14) =1659208781a(15) =3772267028a(16) =8617309611a(17) =19752084140a(18) =45358074700a(19) =104286805752a(20) =239930547292
External references
- oeis: A251054