To continue the sequence of tiles shown, the tile indicated by the question…

Count the dots in each tile of the sequence: 0, 1, 1, 2, 3, 5. Each term equals the sum of the two preceding terms (a Fibonacci-type progression): 0+1=1, 1+1=2, 1+2=3, 2+3=5. Continuing the rule, the next term is 3+5=8. The required tile must therefore contain 8 dots: a 3×3 grid of dots with the centre position empty.