Number of (n+2) X (4+2) 0..1 arrays with every 2 X 2 and 3 X 3 subblock diagonal sum minus antidiagonal sum unequal to its neighbors horizontally and vertically.
A253736
Number of (n+2) X (4+2) 0..1 arrays with every 2 X 2 and 3 X 3 subblock diagonal sum minus antidiagonal sum unequal to its neighbors horizontally and vertically.
Terms
- a(0) =6932a(1) =9876a(2) =17608a(3) =54688a(4) =143080a(5) =345304a(6) =922004a(7) =2750948a(8) =7532104a(9) =19629020a(10) =54002636a(11) =156395176a(12) =431245644a(13) =1157344788a(14) =3200744100a(15) =9082171160a(16) =25099285504a(17) =68356417780a(18) =189256505056a(19) =530927271980
External references
- oeis: A253736