OFFSET
1,2
COMMENTS
See A367752 for the definition of the shape of a labeled rooted hypertree.
FORMULA
E.g.f.: series reversion of (1+x)*log(1+log(1+x))*exp(-x).
PROG
(SageMath) R.<t>=PowerSeriesRing(QQ, 30); (1+t)*(ln(1+ln(1+t))*exp(-t)).reverse().egf_to_ogf().list()[1:]
(PARI) my(x='x+O('x^30)); Vec(serlaplace(serreverse((1+x)*log(1+log(1+x))*exp(-x)))) \\ Michel Marcus, Nov 30 2023
CROSSREFS
KEYWORD
nonn
AUTHOR
Paul Laubie, Nov 29 2023
STATUS
approved