login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A206458 Number of 0..n arrays of length n+4 avoiding the consecutive pattern 0..n 1
6, 622, 16128, 390125, 10076832, 282473877, 8589932544, 282429533565, 9999999996000, 379749833577917, 15407021574579456, 665416609183171053, 30491346729331184928, 1477891880035400377125, 75557863725914323402752 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Subdiagonal 4 of A206455

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

FORMULA

Empirical: a(n) = sum{i in 0..floor((n+4)/(n+1))} ((-1)^i*(n+1)^((n+4) -(n+1)*i)*binomial((n+4) -n*i,i))

CROSSREFS

Sequence in context: A300389 A172899 A222831 * A265116 A132928 A055317

Adjacent sequences:  A206455 A206456 A206457 * A206459 A206460 A206461

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 07 2012

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified August 18 22:45 EDT 2022. Contains 356215 sequences. (Running on oeis4.)