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A152093 Numbers of intervals for the pruning-grafting lattices of size n 5
1, 3, 15, 101, 818, 7486, 74648, 793005, 8843056, 102464586 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

REFERENCES

J.-L. Baril and J.-M. Pallo, The pruning-grafting lattice of binary trees, Theoretical Computer Science, 409 (2008), 382-393

CROSSREFS

Sequence in context: A196962 A074521 A074536 * A109777 A135903 A185753

Adjacent sequences:  A152090 A152091 A152092 * A152094 A152095 A152096

KEYWORD

nonn

AUTHOR

Jean-Luc Baril (barjl(AT)u-bourgogne.fr), Nov 24 2008

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Last modified February 14 13:08 EST 2012. Contains 205623 sequences.