194362

On the top row, there is one (small equilateral) triangle, and on the second row there are two (small equilateral) triangles, and so on, so on the Nth row, there are N (small equilateral) triangles.
Therefore, in total, the largest triangle (with N rows) contains the nth triangular number of triangles, so it contains N/2(N+1) triangles.
Each (small) triangle requires three lolly sticks, so in total, we use 3N(N+1)/2 triangles.