<｜begin▁of▁sentence｜>### Instruction:
I have an undirected graph with the edges (0,1), (0,2), (1,2), (1,3), (1,4), and (4,5). How can I calculate the rich-club coefficient for this graph without normalization and with a random seed of 42?
### Response:
import networkx as nx

# Create a graph
G = nx.Graph([(0, 1), (0, 2), (1, 2), (1, 3), (1, 4), (4, 5)])

# Calculate the rich-club coefficient
rc = nx.rich_club_coefficient(G, normalized=False, seed=42)

# Access the rich-club coefficient for k=0
rc_coefficient = rc[0]
print('Rich-club coefficient for k=0:', rc_coefficient)
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