Number of (n+1)X(4+1) 0..3 arrays with no 2X2 subblock having the sum of its diagonal elements greater than the absolute difference of its antidiagonal elements.
A251051
Number of (n+1)X(4+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) =2243a(1) =11280a(2) =24893a(3) =59215a(4) =123396a(5) =262200a(6) =533327a(7) =1107413a(8) =2297926a(9) =4888898a(10) =10549941a(11) =23231818a(12) =51804184a(13) =116876925a(14) =265531368a(15) =606511919a(16) =1389607505a(17) =3190603867a(18) =7334375879a(19) =16872832209a(20) =38832132163a(21) =89393731501a(22) =205817073537
External references
- oeis: A251051