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!)
A233674 Number of (n+1)X(n+1) 0..3 arrays with every 2X2 subblock having the sum of the squares of the edge differences equal to 6 0
48, 928, 28544, 2442208, 365293440, 169016684160, 127711201373696, 328477373854376960, 1247863750672409103360, 17890273200647565664976896 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A233682

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for n=3

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

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

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

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

CROSSREFS

Sequence in context: A233959 A233177 A014703 * A293778 A089903 A274806

Adjacent sequences:  A233671 A233672 A233673 * A233675 A233676 A233677

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 October 19 09:58 EDT 2021. Contains 348074 sequences. (Running on oeis4.)