3,2

P. Di Francesco, O. Golinelli and E. Guitter, Meander, folding and arch statistics.

Cf. A000682.

Sequence in context: A094977 A027064 A027066 this_sequence A047102 A109000 A129962

Adjacent sequences: A046719 A046720 A046721 this_sequence A046723 A046724 A046725

nonn

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