Number of (n+1) X (7+1) 0..2 arrays with no 2 X 2 subblock having the sum of its diagonal elements greater than the absolute difference of its antidiagonal elements.
A251087
Number of (n+1) X (7+1) 0..2 arrays with no 2 X 2 subblock having the sum of its diagonal elements greater than the absolute difference of its antidiagonal elements.
Terms
- a(0) =3593a(1) =9086a(2) =15411a(3) =28616a(4) =48017a(5) =82898a(6) =139553a(7) =240972a(8) =420611a(9) =755534a(10) =1387095a(11) =2607904a(12) =4990157a(13) =9687898a(14) =18995941a(15) =37513316a(16) =74424559a(17) =148107894a(18) =295305995a(19) =589513112a(20) =1177703721a(21) =2353835426a(22) =4705809161a(23) =9409435196a(24) =18816319547
External references
- oeis: A251087