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!)
A241287 Number of 5Xn 0..3 arrays with no element equal to one plus the sum of elements to its left or zero plus the sum of the elements above it or one plus the sum of the elements diagonally to its northwest or one plus the sum of the elements antidiagonally to its northeast, modulo 4 1

%I

%S 56,139,1615,6783,20717,451318,1543713,8288114,79113707,276340333,

%T 1878731208,14642190232,59010752583,404841299508,2875913561864,

%U 13757588225177,90753330244908,606550462257317,3111205949073436

%N Number of 5Xn 0..3 arrays with no element equal to one plus the sum of elements to its left or zero plus the sum of the elements above it or one plus the sum of the elements diagonally to its northwest or one plus the sum of the elements antidiagonally to its northeast, modulo 4

%C Row 5 of A241283

%H R. H. Hardin, <a href="/A241287/b241287.txt">Table of n, a(n) for n = 1..20</a>

%e Some solutions for n=3

%e ..3..2..3....3..2..3....3..2..3....3..2..3....3..2..3....3..2..3....3..2..3

%e ..0..3..2....2..1..2....2..1..2....0..3..2....2..1..2....0..3..2....2..1..2

%e ..0..0..2....0..2..0....0..0..0....2..0..0....2..0..2....2..2..0....0..0..3

%e ..2..2..0....0..0..0....0..2..0....0..0..3....0..0..0....2..0..0....2..2..2

%e ..2..0..2....0..0..2....2..0..2....2..2..2....0..0..2....2..2..2....0..0..0

%K nonn

%O 1,1

%A _R. H. Hardin_, Apr 18 2014

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 January 28 14:40 EST 2023. Contains 359895 sequences. (Running on oeis4.)