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!)
A146461 Number of n X n binary arrays with all ones connected only in a 1100-0111-0100 pattern in any orientation. 0
1, 1, 1, 17, 49, 361, 6061, 172273, 5274005, 274545571, 26127520797, 3923980431021, 871070091426765 (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

.1.0.0.0.0.0.1.0

.1.1.1.0.1.1.1.0

.0.1.0.0.0.0.1.1

.0.1.0.0.1.1.0.0

.0.0.1.1.1.0.1.0

.0.1.0.0.1.0.1.0

.0.1.1.1.0.1.1.1

.1.1.0.0.0.0.0.1

CROSSREFS

Sequence in context: A146698 A146706 A120612 * A098329 A160076 A003124

Adjacent sequences:  A146458 A146459 A146460 * A146462 A146463 A146464

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 July 24 14:51 EDT 2021. Contains 346273 sequences. (Running on oeis4.)