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A123446
Number of perfectly contractile perfect graphs on n nodes.
0
1, 2, 4, 11, 33, 147, 896, 8683, 131333, 3065118
OFFSET
1,2
CROSSREFS
Sequence in context: A123447 A123461 A123407 * A123460 A123454 A123433
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Oct 18 2006
STATUS
approved