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!)
A278279 Number of nX7 0..1 arrays with every element both equal and not equal to some elements at offset (-1,-1) (-1,0) (-1,1) (0,-1) (0,1) or (1,0), with upper left element zero. 1

%I #4 Nov 16 2016 12:09:47

%S 0,317,20736,1870365,157609938,13538466880,1158266740087,

%T 99182079495633,8491049196878995,726961954823301592,

%U 62238120572972036597,5328470518831632979210,456192709882426407920004

%N Number of nX7 0..1 arrays with every element both equal and not equal to some elements at offset (-1,-1) (-1,0) (-1,1) (0,-1) (0,1) or (1,0), with upper left element zero.

%C Column 7 of A278280.

%H R. H. Hardin, <a href="/A278279/b278279.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

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

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

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

%Y Cf. A278280.

%K nonn

%O 1,2

%A _R. H. Hardin_, Nov 16 2016

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 February 21 16:49 EST 2024. Contains 370237 sequences. (Running on oeis4.)