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!)
A247401 Number of length n+4 0..5 arrays with no disjoint pairs in any consecutive five terms having the same sum 1
2280, 6216, 17164, 47592, 132368, 369064, 1044356, 2970580, 8447400, 23975404, 67940424, 192942140, 548911244, 1562207084, 4443125192, 12626504968, 35888101452, 102057845464, 290313824400, 825748710168, 2348029112032 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A247404

LINKS

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

EXAMPLE

Some solutions for n=5

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

..5....0....1....0....5....3....2....0....0....5....0....0....1....2....0....3

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

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

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

..3....0....0....0....4....5....4....2....0....0....2....0....3....0....4....0

..5....5....3....0....5....1....4....1....0....3....5....5....1....5....3....4

..0....5....0....1....0....2....2....0....2....4....4....5....5....5....4....1

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

CROSSREFS

Sequence in context: A205165 A166222 A203725 * A264256 A236700 A268892

Adjacent sequences:  A247398 A247399 A247400 * A247402 A247403 A247404

KEYWORD

nonn

AUTHOR

R. H. Hardin, Sep 16 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 June 23 18:45 EDT 2021. Contains 345402 sequences. (Running on oeis4.)