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A359994
Independence number of the 2-Fibonacci digraph of order n.
3
1, 1, 2, 3, 6, 9, 16, 25, 44, 67, 115
OFFSET
1,3
COMMENTS
See Dalfó and Fiol (2019) or A360000 for the definition of the 2-Fibonacci graph.
a(12) >= 179. - Pontus von Brömssen, Nov 12 2023
LINKS
C. Dalfó and M. A. Fiol, On d-Fibonacci digraphs, arXiv:1909.06766 [math.CO], 2019.
PROG
(Python)
import networkx as nx
def F(n): return nx.DiGraph(((0, 0), (0, 1), (1, 0))) if n == 1 else nx.line_graph(F(n-1))
def A359994(n): return nx.max_weight_clique(nx.complement(nx.Graph(F(n))), weight=None)[1]
CROSSREFS
KEYWORD
nonn,more
AUTHOR
STATUS
approved