A289595 - OEIS

%I #14 Jul 26 2020 08:04:14

%S 1,1,1,2,8,26,85,283,959,3300,11505

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

%H Murray Tannock, <a href="https://skemman.is/bitstream/1946/25589/1/msc-tannock-2016.pdf">Equivalence classes of mesh patterns with a dominating pattern</a>, MSc Thesis, Reykjavik Univ., May 2016. See Appendix B2.

%F a(n+4) = A000245(n+2)-A000108(n) (conjectured). - _Michael D. Weiner_, Jul 24 2020

%Y Cf. A000108, A000245.

%K nonn,more

%O 1,4

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