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!)
A250275 Number of length n+1 0..6 arrays with the sum of the squares of adjacent differences multiplied by some arrangement of +-1 equal to zero 0
7, 67, 207, 1991, 14003, 130335, 1154141, 10172515, 86975297, 715749943, 5655832367, 43083514447, 318775210489, 2309920909887 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A250277

LINKS

Table of n, a(n) for n=1..14.

EXAMPLE

Some solutions for n=6

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

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

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

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

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

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

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

CROSSREFS

Sequence in context: A103102 A139910 A250227 * A240373 A077789 A250165

Adjacent sequences:  A250272 A250273 A250274 * A250276 A250277 A250278

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 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 October 27 20:04 EDT 2021. Contains 348289 sequences. (Running on oeis4.)