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!)
A247926 Number of length n+4 0..7 arrays with some disjoint pairs in every consecutive five terms having the same sum 1
20648, 117256, 663080, 3785236, 21652632, 123827876, 709026892, 4062290944, 23284325652, 133483154922, 765235772714, 4387183095314, 25153072167234, 144214094669264, 826855651232370, 4740814985849206, 27181749626302484 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A247927

LINKS

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

EXAMPLE

Some solutions for n=2

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

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

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

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

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

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

CROSSREFS

Sequence in context: A056073 A173378 A028519 * A107263 A237329 A292021

Adjacent sequences:  A247923 A247924 A247925 * A247927 A247928 A247929

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
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified January 26 13:00 EST 2021. Contains 340439 sequences. (Running on oeis4.)