1,2

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

P. J. Cameron, Some treelike objects, Quart. J. Math. Oxford, 38 (1987), 155-183.

Index entries for sequences related to trees

Sequence in context: A145072 A149927 A035350 this_sequence A149928 A003430 A149929

Adjacent sequences: A006567 A006568 A006569 this_sequence A006571 A006572 A006573

nonn

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