OFFSET
0,2
LINKS
Adrian Ocneanu, On the inner structure of a permutation: bicolored partitions and Eulerians, trees and primitives, arXiv preprint arXiv:1304.1263 [math.CO], 2013.
CROSSREFS
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Jun 05 2013
STATUS
approved