<｜begin▁of▁sentence｜>### Instruction:
As a mathematician working on graph theory, you have a task to represent a specific graph using the LEDA native format. The graph consists of 4 vertices and 3 edges, specifically (0, 1), (1, 2), and (2, 3). To complete this task, you need to use the 'write_leda' function in the igraph library to create a file named 'output_graph.leda' containing the graph in LEDA native format. This will allow you to further analyze and manipulate the graph using LEDA-compatible tools and algorithms.
### Response:
from igraph import Graph

# Create a graph with 4 vertices and 3 edges
g = Graph(edges=[(0, 1), (1, 2), (2, 3)])

# Write the graph to a file in LEDA format
g.write_leda('output_graph.leda')
<|EOT|>
