1,1

Dimensions of the graded components of the domain of cocommutatitivity of the Hopf algebra of free quasi-symmetric functions of level 2.

J.-C. Novelli and J.-Y. Thibon, Free quasi-symmetric functions and descent algebras for wreath products and noncommutative multi-symmetric functions

EULER([seq(c(n), n=1..20)]); where c(n) is A141307.

Cf. A003319, A141307.

Sequence in context: A090352 A123549 A009704 this_sequence A012712 A012363 A012717

Adjacent sequences: A141305 A141306 A141307 this_sequence A141309 A141310 A141311

nonn

Jean-Yves Thibon (jyt(AT)univ-mlv.fr), Jun 26 2008