login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A260169 Number of (n+2)X(n+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000101 or 00010001 0

%I #4 Jul 17 2015 13:52:03

%S 40,167,1054,6973,61216,651914,7542684,110062152,2074273964,

%T 43510471716,1129587053318,36200205626536,1417187649633280

%N Number of (n+2)X(n+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000101 or 00010001

%C Diagonal of A260177

%e Some solutions for n=4

%e ..1..0..0..0..0..0....0..1..0..1..0..1....0..0..0..1..0..0....1..0..0..0..1..0

%e ..0..0..0..1..0..0....0..0..0..0..0..0....1..0..0..0..1..0....0..1..0..0..0..0

%e ..0..0..1..0..0..0....0..0..0..0..0..0....0..1..0..0..0..0....0..0..0..0..1..0

%e ..0..1..0..0..0..1....0..1..0..1..0..0....0..0..0..0..1..0....0..0..0..1..0..0

%e ..1..0..0..0..1..0....1..0..0..0..1..0....0..1..0..0..0..1....1..0..0..0..0..0

%e ..0..0..0..1..0..0....0..0..0..0..0..0....1..0..1..0..0..0....0..1..0..0..0..0

%Y Cf. A260177

%K nonn

%O 1,1

%A _R. H. Hardin_, Jul 17 2015

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 18 08:27 EDT 2024. Contains 371769 sequences. (Running on oeis4.)