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!)
A302275 Number of n X 5 0..1 arrays with every element equal to 1, 2 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 1

%I #7 Apr 05 2018 04:09:42

%S 3,27,74,283,1219,3854,14639,63093,222254,867269,3651231,13909218,

%T 55448467,230250019,911892066,3685592711,15189545391,61267056156,

%U 249395546907,1024061684191,4165273608452,17011882082021,69737883682027

%N Number of n X 5 0..1 arrays with every element equal to 1, 2 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

%C Column 5 of A302278.

%H R. H. Hardin, <a href="/A302275/b302275.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5:

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

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

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

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

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

%Y Cf. A302278.

%K nonn

%O 1,1

%A _R. H. Hardin_, Apr 04 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 April 23 23:26 EDT 2024. Contains 371917 sequences. (Running on oeis4.)