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!)
A302669 Number of nX7 0..1 arrays with every element equal to 1, 2, 3 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 1

%I

%S 8,1934,15569,251254,3204956,46360666,637088915,8880747825,

%T 123521424862,1717557375519,23910961429217,332517383714540,

%U 4627380566545690,64369973050145418,895641924918067374,12460311385203779872

%N Number of nX7 0..1 arrays with every element equal to 1, 2, 3 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

%C Column 7 of A302670.

%H R. H. Hardin, <a href="/A302669/b302669.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A302670.

%K nonn

%O 1,1

%A _R. H. Hardin_, Apr 11 2018

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 September 29 22:48 EDT 2022. Contains 357092 sequences. (Running on oeis4.)