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A177646 Number of permutations of 4 copies of 1..n avoiding adjacent step pattern up, up, up, up. 0
1, 1, 70, 34650, 63063000, 302857024681, 3171644273043481, 63767771149790231020, 2246276459710030995597000, 129398739548198780715411006000, 11551019408580550906836084615390361, 1530266028377887010801240993038984544961, 290384391726747532382877490399579938116889720 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..12.

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

CROSSREFS

Cf. A014608.

Sequence in context: A177675 A177300 A266741 * A177647 A177658 A177670

Adjacent sequences:  A177643 A177644 A177645 * A177647 A177648 A177649

KEYWORD

nonn

AUTHOR

R. H. Hardin, May 10 2010

EXTENSIONS

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

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

STATUS

approved

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Last modified January 17 06:41 EST 2019. Contains 319207 sequences. (Running on oeis4.)