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A027680
Number of independent subsets of 5^n cube (P_5 X ... X P_5).
0
2, 13, 55447, 1621477990380993035885
OFFSET
0,1
EXAMPLE
For n=0, the two sets are the empty set and a set containing a single isolated vertex. - Sean A. Irvine, Nov 20 2019
CROSSREFS
KEYWORD
nonn,hard,more
AUTHOR
EXTENSIONS
a(0) corrected by Sean A. Irvine, Nov 20 2019
STATUS
approved