A177646 Number of permutations of 4 copies of 1..n avoiding adjacent step pattern up, up, up, up.

1, 1, 70, 34650, 63063000, 302857024681, 3171644273043481, 63767771149790231020, 2246276459710030995597000, 129398739548198780715411006000, 11551019408580550906836084615390361, 1530266028377887010801240993038984544961, 290384391726747532382877490399579938116889720

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(8) from Alois P. Heinz, Nov 01 2013

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