|
|
A144964
|
|
Number of groves of degree n.
|
|
1
|
|
|
|
OFFSET
|
1,2
|
|
COMMENTS
|
A grove of degree n is a nonempty subset of the set of binary trees of degree n.
The next term a(7) has 130 decimal digits. - Andrew Howroyd, Oct 05 2023
|
|
LINKS
|
J.-L. Loday, Arithmetree, J. Algebra 258 (2002), no. 1, 275-309.
|
|
FORMULA
|
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|