login
This site is supported by donations to The OEIS Foundation.

 

Logo

Thanks to everyone who made a donation during our annual appeal!
To see the list of donors, or make a donation, see the OEIS Foundation home page.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A177640 Number of permutations of 4 copies of 1..n avoiding adjacent step pattern up, up, up. 0
1, 1, 70, 34650, 58370761, 254257625001, 2393820329913000, 43063879074705797700, 1353425989195928500100361, 69430476979743039562119157801, 5512282735792717664890405885818130, 648886597453482823172404492855676280150, 109337364789335440628249746207373482901394961 (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

Sequence in context: A177672 A177299 A266740 * A177641 A177648 A177653

Adjacent sequences:  A177637 A177638 A177639 * A177641 A177642 A177643

KEYWORD

nonn

AUTHOR

R. H. Hardin, May 10 2010

EXTENSIONS

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

a(0), a(9)-a(12) from Alois P. Heinz, Aug 08 2018

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified January 17 10:08 EST 2019. Contains 319218 sequences. (Running on oeis4.)