A New Quantity Counted by OEIS Sequence A006012
Combinatorics
2017-06-28 v2
Abstract
We prove an existing conjecture that the sequence defined recursively by counts the number of length- permutations avoiding the four generalized permutation patterns 1-32-4, 1-42-3, 2-31-4, and 2-41-3.
Cite
@article{arxiv.1706.07064,
title = {A New Quantity Counted by OEIS Sequence A006012},
author = {Yonah Biers-Ariel},
journal= {arXiv preprint arXiv:1706.07064},
year = {2017}
}