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!)
A223034 Number of 3-vexillary permutations in S_n, that is, permutations whose Stanley symmetric function has at most 3 terms or at most 3 Edelman-Greene tableaux. 1
1, 1, 2, 6, 24, 120, 705, 4553, 30930, 216412, 1545469 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
COMMENTS
This family is characterized by a finite set of permutation patterns.
LINKS
S. Billey and B. Pawlowski, Permutation Patterns, Stanley symmetric functions and generalized Specht modules, arXiv:1304.7870 [math.CO], 2013.
Elizabeth Hartung, Hung Phuc Hoang, Torsten Mütze, Aaron Williams, Combinatorial generation via permutation languages. I. Fundamentals, arXiv:1906.06069 [cs.DM], 2019.
CROSSREFS
Sequence in context: A177525 A177532 A242573 * A177530 A324134 A324135
KEYWORD
nonn,more
AUTHOR
Sara Billey, Apr 04 2013
EXTENSIONS
a(0)=1 prepended by Alois P. Heinz, Jul 31 2019
STATUS
approved

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 18 22:56 EDT 2024. Contains 370952 sequences. (Running on oeis4.)