Number of n X 5 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).
A230659
Number of n X 5 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) =15a(2) =135a(3) =531a(4) =8613a(5) =28161a(6) =477279a(7) =1539207a(8) =26178201a(9) =84335553a(10) =1434726783a(11) =4621740687a(12) =78627215025a(13) =253283346081
External references
- oeis: A230659