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!)
A184561 Number of (n+1)X7 0..2 arrays with no 2X2 subblock summing to less than 4 1
603249, 390354307, 203570564774, 115000791536877, 63392707611948281, 35245029137091490532, 19540724845064600039882, 10844219595929643673506107, 6016136514697924805072162487, 3337980836583341810657426070927 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A184564

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..200

EXAMPLE

Some solutions for 3X7

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

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

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

CROSSREFS

Sequence in context: A238310 A237471 A251070 * A321705 A340924 A218107

Adjacent sequences:  A184558 A184559 A184560 * A184562 A184563 A184564

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 17 2011

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 04:52 EST 2021. Contains 349562 sequences. (Running on oeis4.)