1,2

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

F. Bergeron, G. Labelle and P. Leroux, Th\'{e}orie des esp\`{e}ces et Combinatoire des Structures Arborescentes, Publications du LACIM, Universit\'{e} du Qu\'{e}bec \`{a} Montr\'{e}al, 1994, p. 214.

F. Bergeron, G. Labelle and P. Leroux, Combinatorial Species and Tree-Like Structures, Cambridge, 1998, pp. 210, 242 (3.2.68, 3.3.92)

G. Labelle, Some new computational methods in the theory of species, pp. 192-209 of "Combinatoire Enumerative (Montreal 1985)", Lect. Notes Math. 1234, 1986.

Index entries for sequences related to rooted trees

E.g.f. satisfies 2*A(x)=exp(x+A(x))-1-log(1-x)*A(x).

Cf. A052315.

Adjacent sequences: A006956 A006957 A006958 this_sequence A006960 A006961 A006962

Sequence in context: A141008 A087488 A099343 this_sequence A121017 A137121 A110222

nonn,eigen,nice

Simon Plouffe, N. J. A. Sloane (njas(AT)research.att.com).

More terms, formula from Christian G. Bower (bowerc(AT)usa.net), Dec 15 1999.