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!)
A183841 Number of (n+1)X6 binary arrays with each element of every 2X2 subblock being the sum mod 2 of two others 1

%I #5 Mar 31 2012 12:35:54

%S 717,9747,132152,1839599,25468475,355075734,4937888557,68813532021,

%T 958037081176,13347035945673,185880082377841,2589283005758406,

%U 36063771414713729,502338630109805537,6996850074625505590

%N Number of (n+1)X6 binary arrays with each element of every 2X2 subblock being the sum mod 2 of two others

%C Column 5 of A183845

%H R. H. Hardin, <a href="/A183841/b183841.txt">Table of n, a(n) for n = 1..200</a>

%F Empirical: a(n)=22*a(n-1)+6*a(n-2)-2880*a(n-3)+13798*a(n-4)+110000*a(n-5)-930929*a(n-6)-756970*a(n-7)+22953106*a(n-8)-29951536*a(n-9)-275622306*a(n-10)+719843122*a(n-11)+1667030114*a(n-12)-7150472568*a(n-13)-3550504371*a(n-14)+39002379500*a(n-15)-14571682432*a(n-16)-122689648382*a(n-17)+115945427436*a(n-18)+213841845768*a(n-19)-321233080121*a(n-20)-170960293504*a(n-21)+449689611792*a(n-22)-2398234560*a(n-23)-328027764736*a(n-24)+92814224768*a(n-25)+116279246592*a(n-26)-52763484800*a(n-27)-16165644288*a(n-28)+10015540736*a(n-29)+268849152*a(n-30)-446828544*a(n-31)

%e Some solutions for 3X6

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 07 2011

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 24 10:00 EDT 2024. Contains 371935 sequences. (Running on oeis4.)