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

0,3

Links

Table of n, a(n) for n=0..11.

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

Crossrefs

Cf. A014608.

Sequence in context: A177658 A177670 A177671 * A177657 A177676 A014608

Adjacent sequences: A177653 A177654 A177655 * A177657 A177658 A177659

Keyword

nonn

Author

R. H. Hardin, May 10 2010

Extensions

a(9)-a(11) from Alois P. Heinz, Aug 08 2018

Status

approved