A177656 Number of permutations of 4 copies of 1..n avoiding adjacent step pattern up, up, up, up, up.

1, 1, 70, 34650, 63063000, 305540235000, 3244063941457921, 66318107269696031401, 2379613992603610298990440, 139801056431706089952638689800, 12738104011291233355807195325583000, 1723542569871737348415590682638868511200

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(11) from Alois P. Heinz, Aug 08 2018