<image>The following figures are composed of rhombuses of the same size arranged in a certain pattern. In the first figure ($$①$$), there are $$3$$ rhombuses, in the second figure ($$②$$), there are $$7$$ rhombuses, in the third figure ($$③$$), there are $$13$$ rhombuses, and so on. Following this pattern, the number of rhombuses in the tenth figure ($$⑩$$) is ________. 