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!)
A300608 Number of nX4 0..1 arrays with every element equal to 1, 2, 3 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1

%I

%S 2,30,277,2347,19532,164619,1387896,11697909,98591087,830954473,

%T 7003554684,59028229212,497509382092,4193173792143,35341458756838,

%U 297869535158874,2510543242339775,21159691214336637,178340896550028412

%N Number of nX4 0..1 arrays with every element equal to 1, 2, 3 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

%C Column 4 of A300612.

%H R. H. Hardin, <a href="/A300608/b300608.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A300608/a300608.txt">Empirical recurrence of order 72</a>

%F Empirical recurrence of order 72 (see link above)

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A300612.

%K nonn

%O 1,1

%A _R. H. Hardin_, Mar 09 2018

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 January 27 18:40 EST 2022. Contains 350611 sequences. (Running on oeis4.)