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!)
A146469 Number of n X n binary arrays with all ones connected only in a 1110-0111 pattern in any orientation. 0
1, 1, 1, 13, 69, 457, 6223, 127787, 3658281, 163817453, 11238713859, 1160267254915, 182817418500667 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..13.

EXAMPLE

Maximal 8 X 8 example

.0.1.1.1.0.1.1.1

.1.1.1.0.1.1.1.0

.0.0.0.0.0.0.0.0

.1.1.1.0.1.1.1.0

.0.1.1.1.0.1.1.1

.0.0.0.0.0.0.0.0

.1.1.1.0.1.1.1.0

.0.1.1.1.0.1.1.1

CROSSREFS

Sequence in context: A055338 A055880 A105058 * A146381 A085461 A081860

Adjacent sequences:  A146466 A146467 A146468 * A146470 A146471 A146472

KEYWORD

nonn

AUTHOR

R. H. Hardin

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 8 17:01 EST 2021. Contains 349596 sequences. (Running on oeis4.)