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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A247923 Number of length n+4 0..4 arrays with some disjoint pairs in every consecutive five terms having the same sum 1
2365, 9569, 38753, 157589, 641575, 2609703, 10628145, 43309569, 176541467, 719680843, 2933518859, 11958042489, 48747858789, 198731995329, 810185963991, 3302913679607, 13465095970873, 54893822001369, 223789362432353 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A247927

LINKS

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

EXAMPLE

Some solutions for n=4

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

..2....3....3....1....3....1....4....1....2....3....3....0....2....1....2....3

..1....1....2....0....1....3....3....0....3....1....4....0....1....1....2....4

..0....1....3....3....4....4....4....2....1....0....0....2....3....2....4....1

..3....3....0....2....3....0....3....2....1....4....2....2....1....3....3....1

..1....2....0....0....2....4....0....3....3....1....1....0....4....2....4....2

..2....2....2....2....0....0....1....4....3....3....3....0....4....3....1....0

..4....3....1....0....2....1....4....1....2....3....0....4....0....2....1....0

CROSSREFS

Sequence in context: A250990 A269483 A187238 * A186785 A185607 A068282

Adjacent sequences:  A247920 A247921 A247922 * A247924 A247925 A247926

KEYWORD

nonn

AUTHOR

R. H. Hardin, Sep 26 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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified September 23 13:55 EDT 2017. Contains 292358 sequences.