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!)
A278005 Number of nX7 0..2 arrays with every element plus 1 mod 3 equal to some element at offset (-1,-1) (-1,0) (-1,1) (0,-1) (0,1) (1,-1) or (1,0), with upper left element zero. 1

%I

%S 0,120462,114975158,149393609720,191436065235070,244860735613038021,

%T 313290097915534353668,400844111719355445735946,

%U 512863838120564283929797977,656188759746987684995405135741

%N Number of nX7 0..2 arrays with every element plus 1 mod 3 equal to some element at offset (-1,-1) (-1,0) (-1,1) (0,-1) (0,1) (1,-1) or (1,0), with upper left element zero.

%C Column 7 of A278006.

%H R. H. Hardin, <a href="/A278005/b278005.txt">Table of n, a(n) for n = 1..50</a>

%e Some solutions for n=2

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

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

%Y Cf. A278006.

%K nonn

%O 1,2

%A _R. H. Hardin_, Nov 08 2016

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 September 21 16:31 EDT 2021. Contains 347598 sequences. (Running on oeis4.)