A177615 Number of permutations of 3 copies of 1..n avoiding adjacent step pattern up, up, up, up, up.

1, 1, 20, 1680, 369600, 168168000, 137127810959, 182138398520387, 367988956112888200, 1074073326771101149080, 4350318942513425384777400, 23673963203663687592089088600, 168569155472096397352266896207243, 1536148007688582239667327040442799059

Offset: 0

Author

R. H. Hardin, May 10 2010

Keywords

• nonn

Links

• Mingjia Yang and Doron Zeilberger, Increasing Consecutive Patterns in Words, arXiv:1805.06077 [math.CO], 2018.
• Mingjia Yang, An experimental walk in patterns, partitions, and words, Ph. D. Dissertation, Rutgers University (2020).

Crossrefs

Cf. A014606.

Cf. A177596, A177605.

Extensions

a(10)-a(13) from Alois P. Heinz, Aug 08 2018