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!)
A295039 Number of nX7 0..1 arrays with each 1 horizontally or vertically adjacent to 1 or 2 1s. 1

%I #4 Nov 12 2017 20:05:04

%S 37,2735,104096,4738235,209181266,9248214732,411280569141,

%T 18227207589288,807975522778623,35828949243544333,1588724655137268304,

%U 70444327993290622210,3123514826860958239480,138498446900583005504125

%N Number of nX7 0..1 arrays with each 1 horizontally or vertically adjacent to 1 or 2 1s.

%C Column 7 of A295040.

%H R. H. Hardin, <a href="/A295039/b295039.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

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

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

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

%Y Cf. A295040.

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 12 2017

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 25 09:38 EDT 2024. Contains 371967 sequences. (Running on oeis4.)