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!)
A259768 Number of (n+2)X(4+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 or 00000101 1

%I #4 Jul 04 2015 21:40:16

%S 201,299,385,451,474,835,872,968,1532,1794,2116,2746,4218,4546,5038,

%T 8578,9510,10852,15782,21068,23626,28628,45684,49942,56506,89228,

%U 107618,121770,163652,236042,261164,308318,487320,557176,632898,928294,1212250

%N Number of (n+2)X(4+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 or 00000101

%C Column 4 of A259770

%H R. H. Hardin, <a href="/A259768/b259768.txt">Table of n, a(n) for n = 1..210</a>

%F Empirical: a(n) = 3*a(n-7) +5*a(n-10) +a(n-13) -a(n-14) -a(n-17) -2*a(n-21) for n>24

%e Some solutions for n=4

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

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

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

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

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

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

%Y Cf. A259770

%K nonn

%O 1,1

%A _R. H. Hardin_, Jul 04 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 11:27 EDT 2024. Contains 371779 sequences. (Running on oeis4.)