login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A289588 Related to number of mesh patterns of length 2 that avoid the pattern 321. 0

%I #12 Aug 09 2019 12:19:07

%S 1,1,1,2,4,11,34,110,365,1234,4237

%N Related to number of mesh patterns of length 2 that avoid the pattern 321.

%H Murray Tannock, <a href="http://hdl.handle.net/1946/25589">Equivalence classes of mesh patterns with a dominating pattern</a>, MSc Thesis, Reykjavik Univ., May 2016. See Appendix B2.

%F G.f.: (x^4+x^3-x^2)*C(x)/(x-1) - (x^4-x^2+x)/(x-1) where C(x) is the g.f. for the Catalan numbers (A000108) (conjectured). - _Michael D. Weiner_, Aug 08 2019

%K nonn,more

%O 1,4

%A _N. J. A. Sloane_, Jul 08 2017

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 28 14:38 EDT 2024. Contains 371254 sequences. (Running on oeis4.)