Number of nX7 0..2 black square subarrays x(i,j) with each element diagonally or antidiagonally next to at least one element with value 2-x(i,j).
A230660
Number of nX7 0..2 black square subarrays x(i,j) with each element diagonally or antidiagonally next to at least one element with value 2-x(i,j).
Terms
- a(0) =0a(1) =63a(2) =1155a(3) =11745a(4) =477279a(5) =3951657a(6) =169006665a(7) =1374288243a(8) =59075291211a(9) =479621050353
External references
- oeis: A230660