Markus Fulmek. Enumeration of permutations containing a prescribed number of occurrences of a pattern of length three. Adv. Appl. Math., 30(4):607-632, 2003. [doi]
@article{Fulmek03,
title = {Enumeration of permutations containing a prescribed number of occurrences of a pattern of length three},
author = {Markus Fulmek},
year = {2003},
doi = {10.1016/S0196-8858(02)00501-8},
url = {https://doi.org/10.1016/S0196-8858(02)00501-8},
researchr = {https://researchr.org/publication/Fulmek03},
cites = {0},
citedby = {0},
journal = {Adv. Appl. Math.},
volume = {30},
number = {4},
pages = {607-632},
}