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!)
A147011 Number of n X n binary arrays with all ones connected only in a 01000-11111-00010 pattern in any orientation. 0
1, 1, 1, 1, 13, 57, 273, 2363, 27689, 439785, 10940975, 360992565, 16603747977, 1090432526531 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,5

LINKS

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

EXAMPLE

Maximal 8 X 8 example

.0.1.0.0.1.0.0.0

.1.1.0.1.1.1.1.1

.0.1.0.0.0.0.1.0

.0.1.1.0.1.0.0.0

.0.1.0.1.1.1.1.1

.0.0.1.0.0.0.1.0

.0.1.1.1.1.1.0.0

.0.0.0.0.1.0.0.0

CROSSREFS

Sequence in context: A218593 A212405 A147384 * A147019 A230988 A183317

Adjacent sequences:  A147008 A147009 A147010 * A147012 A147013 A147014

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 04 2008

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 November 27 12:51 EST 2021. Contains 349394 sequences. (Running on oeis4.)