Tag Archives: grid


Chain networks consist of a set of nodes and a sequence of edges between them connect them into a single chain.

chain ={}
for i in range(n-1):
    make_link(chain, i, i+1)
n1 e1 n2 e2 n3 e3 n4 e4 n5   – nodes (n), edges (e) = n-1
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15. Grid Routes

Starting in the top left corner of a 2×2 grid, there are 6 routes (without backtracking) to the bottom right corner.

How many routes are there through a 20×20 grid? Read more of this post