Base Case
if ( j >= n ) : NEW_LINE INDENT k1 = 2 NEW_LINE k2 = 2 NEW_LINE k1 -= 1 NEW_LINE k2 += 1 NEW_LINE if ( i == 2 ) : NEW_LINE INDENT k1 = 0 NEW_LINE k2 = n - 1 NEW_LINE DEDENT return 0 NEW_LINE DEDENT