login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A264320 Number of permutations of [n] with exactly one occurrence of the consecutive pattern 3412. 2
1, 10, 88, 794, 7639, 79164, 885128, 10657588, 137752283, 1904555934, 28068929900, 439495830750, 7288494061255, 127654030808304, 2355066281798588, 45655570757683888, 927984709909530539, 19735811069218548106, 438344811235148801632, 10149979837759608190794 (list; graph; refs; listen; history; text; internal format)
OFFSET

4,2

LINKS

Alois P. Heinz, Table of n, a(n) for n = 4..200

EXAMPLE

a(4) = 1: 3412.

a(5) = 10: 14523, 24513, 34125, 34512, 35124, 43512, 45123, 45132, 45231, 53412.

CROSSREFS

Column k=1 of A264319.

Sequence in context: A273585 A165148 A287828 * A298134 A163030 A302149

Adjacent sequences:  A264317 A264318 A264319 * A264321 A264322 A264323

KEYWORD

nonn

AUTHOR

Alois P. Heinz, Nov 11 2015

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 September 22 07:34 EDT 2020. Contains 337289 sequences. (Running on oeis4.)