login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 56th year, we are closing in on 350,000 sequences, and we’ve crossed 9,700 citations (which often say “discovered thanks to the OEIS”).

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A233681 Number of (n+1)X(7+1) 0..3 arrays with every 2X2 subblock having the sum of the squares of the edge differences equal to 6 1
116872, 3145968, 81243904, 3057995568, 95799636288, 3879764059776, 127711201373696, 5205568118816384, 174889319781646592, 7078287652666770944, 240929096530590043904, 9661566569156043828736, 332270905126450553744128 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A233682

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..111

EXAMPLE

Some solutions for n=1

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

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

CROSSREFS

Sequence in context: A046407 A156417 A156865 * A246557 A289911 A206204

Adjacent sequences:  A233678 A233679 A233680 * A233682 A233683 A233684

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 14 2013

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 December 6 09:33 EST 2021. Contains 349563 sequences. (Running on oeis4.)