a

src/misc.rs

@@ -31,6 +31,9 @@ pub fn offsets(i: usize, j: usize, range: usize) -> Vec<(usize, usize)> {
         }
 
         for j_o in [-(range as i16), 0, range as i16] {
+            if (i_o, j_o) == (0, 0) {
+                continue;
+            }
             let new_j = j as i16 + j_o;
             if 0 > new_j {
                 continue;