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

 Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 59th year, we have over 358,000 sequences, and we’ve crossed 10,300 citations (which often say “discovered thanks to the OEIS”). Other ways to Give
 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A183598 1/6 the number of (n+1)X5 0..2 arrays with every 2X2 subblock containing all three values 1

%I

%S 534,10797,201770,3831324,72592860,1376627608,26108240340,

%T 495215814566,9393691937690,178194216929170,3380332407037684,

%U 64125402470512942,1216476053110547726,23076960013228726054,437778595866783333858

%N 1/6 the number of (n+1)X5 0..2 arrays with every 2X2 subblock containing all three values

%C Column 4 of A183603

%H R. H. Hardin, <a href="/A183598/b183598.txt">Table of n, a(n) for n = 1..200</a>

%F Empirical: a(n)=29*a(n-1)-116*a(n-2)-2075*a(n-3)+10702*a(n-4)+51511*a(n-5)-261497*a(n-6)-510094*a(n-7)+2707193*a(n-8)+1565260*a(n-9)-12569843*a(n-10)+2644843*a(n-11)+22771798*a(n-12)-13641330*a(n-13)-14269732*a(n-14)+12528656*a(n-15)+1720808*a(n-16)-3240288*a(n-17)+392640*a(n-18)+109056*a(n-19)

%e Some solutions with a(1,1)=0 for 3X5

%e ..0..2..0..2..1....0..2..1..1..2....0..2..1..1..0....0..0..0..1..2

%e ..0..1..1..0..0....1..1..0..2..0....1..0..2..0..2....2..1..2..1..0

%e ..2..2..0..2..1....0..2..1..1..1....1..2..1..2..1....1..0..0..0..2

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 05 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.

Last modified November 30 21:57 EST 2022. Contains 358453 sequences. (Running on oeis4.)