A177676 Number of permutations of 4 copies of 1..n avoiding adjacent step pattern up, up, up, up, up, up.

1, 1, 70, 34650, 63063000, 305540235000, 3246670537110000, 66471564122981413201, 2389990877540259562671201, 140752914446323991227575378870, 12859891096524517937525915077936650, 1745170838822213670914740929271388502150, 339448526227710036385042441267361806617147750

Offset: 0

Author

R. H. Hardin, May 10 2010

Keywords

• nonn

Links

• Mingjia Yang, Doron Zeilberger, Increasing Consecutive Patterns in Words, arXiv:1805.06077 [math.CO], 2018.

Crossrefs

Cf. A014608.

Extensions

a(9)-a(12) from Alois P. Heinz, Aug 08 2018