Number of (n+3)X(7+3) 0..3 white square subarrays x(i,j) with each element diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 4, and upper left element zero.
A230948
Number of (n+3)X(7+3) 0..3 white square subarrays x(i,j) with each element diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 4, and upper left element zero.
Terms
- a(0) =18208a(1) =1144652a(2) =91616256a(3) =6209914254a(4) =421312592376
External references
- oeis: A230948