The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A283639 Number of 6Xn 0..1 arrays with no 1 equal to more than one of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly two elements. 1

%I

%S 0,606,28828,856710,20051838,490925804,10666178322,218881780434,

%T 4439994180178,86144471693502,1647236588215940,30886611480481804,

%U 570240744935345282,10403840277141487378,187674700355041651540

%N Number of 6Xn 0..1 arrays with no 1 equal to more than one of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly two elements.

%C Row 6 of A283634.

%H R. H. Hardin, <a href="/A283639/b283639.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A283639/a283639.txt">Empirical recurrence of order 96</a>

%F Empirical recurrence of order 96 (see link above)

%e Some solutions for n=3

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

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

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

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

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

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

%Y Cf. A283634.

%K nonn

%O 1,2

%A _R. H. Hardin_, Mar 12 2017

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.

Last modified January 19 13:56 EST 2022. Contains 350466 sequences. (Running on oeis4.)