login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A241308 Number of 3Xn 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of the elements above it or zero plus the sum of the elements diagonally to its northwest or zero plus the sum of the elements antidiagonally to its northeast, modulo 4 1

%I

%S 11,6,37,74,186,646,1278,3418,9113,21457,60124,137479,352570,903787,

%T 2152775,5701225,13891880,34569079,88272180,217502063,550658503,

%U 1377693048,3441000964,8635401747,21620210682,54285004854,135701054466

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

%C Row 3 of A241306

%H R. H. Hardin, <a href="/A241308/b241308.txt">Table of n, a(n) for n = 1..183</a>

%e Some solutions for n=4

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

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

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

%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 | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 30 06:31 EDT 2020. Contains 338077 sequences. (Running on oeis4.)