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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A249289 Number of length n+3 0..7 arrays with no four consecutive terms having the sum of any three elements equal to three times the fourth 1
3584, 25280, 178644, 1263044, 8930228, 63142432, 446465388, 3156873140, 22321652802, 157832259724, 1116002868810, 7891051581722, 55796177670214, 394524535750878, 2789610622867354, 19724825025520940, 139470619655277052 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A249290

LINKS

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

EXAMPLE

Some solutions for n=3

..2....6....5....2....4....0....4....0....0....4....6....0....0....2....2....2

..6....7....6....1....5....5....0....5....2....6....3....3....5....2....6....3

..6....5....2....4....4....2....6....1....4....3....1....0....6....7....3....0

..6....7....6....0....2....0....7....4....5....1....4....7....5....7....0....6

..5....6....5....7....3....4....7....3....6....7....3....3....6....5....7....5

..5....7....2....3....5....3....0....1....3....7....0....1....0....5....4....0

CROSSREFS

Sequence in context: A246855 A252153 A234138 * A249537 A156845 A174851

Adjacent sequences:  A249286 A249287 A249288 * A249290 A249291 A249292

KEYWORD

nonn

AUTHOR

R. H. Hardin, Oct 24 2014

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 November 11 22:31 EST 2019. Contains 329046 sequences. (Running on oeis4.)