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!)
A248468 Number of length 7+2 0..n arrays with no three consecutive terms having the sum of any two elements equal to twice the third 1
110, 1152, 43940, 387488, 2582406, 11447368, 44452660, 139623544, 400150926, 1002628764, 2352502608, 5078891508, 10430306882, 20141675148, 37480145240, 66683720948, 115148012058, 192026426768, 312626222120, 495163608752 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 7 of A248461

LINKS

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

EXAMPLE

Some solutions for n=3

..0....2....2....1....3....1....0....0....2....1....0....3....2....1....1....3

..0....2....3....3....1....0....0....3....3....3....3....1....2....3....0....1

..1....3....3....3....0....3....3....3....0....3....1....1....0....0....1....0

..1....0....0....0....0....2....1....1....2....2....3....3....2....3....1....3

..3....2....0....1....3....0....0....3....3....2....3....1....0....3....3....2

..0....3....3....1....2....2....0....1....0....1....2....3....3....0....0....3

..1....3....0....0....0....0....2....0....0....2....2....1....3....1....3....0

..0....2....1....3....3....2....0....0....2....1....0....3....2....1....0....1

..0....3....1....3....0....0....3....3....0....2....3....3....2....3....0....1

CROSSREFS

Sequence in context: A213087 A284244 A232781 * A231967 A232339 A358256

Adjacent sequences: A248465 A248466 A248467 * A248469 A248470 A248471

KEYWORD

nonn

AUTHOR

R. H. Hardin, Oct 06 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 | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified February 8 23:03 EST 2023. Contains 360153 sequences. (Running on oeis4.)