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!)
A147318 Number of n X n binary arrays with all ones connected only in a 00100-00100-00100-11111 pattern in any orientation. 0
1, 1, 1, 1, 9, 25, 65, 339, 3162, 37799, 493077, 7275441, 148345435, 4388356223 (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

.1.1.1.1.1.0.0.1

.0.0.1.0.0.0.0.1

.0.0.1.0.1.1.1.1

.1.0.1.0.0.0.0.1

.1.0.0.0.0.1.0.1

.1.1.1.1.0.1.0.0

.1.0.0.0.0.1.0.0

.1.0.0.1.1.1.1.1

CROSSREFS

Sequence in context: A242116 A209530 A147392 * A146589 A146866 A271731

Adjacent sequences:  A147315 A147316 A147317 * A147319 A147320 A147321

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 August 4 09:03 EDT 2020. Contains 336201 sequences. (Running on oeis4.)