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!)
A233991 Number of (n+1)X(2+1) 0..6 arrays with every 2X2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 18 1

%I

%S 774,3040,11622,51026,218602,1058618,4923910,25667010,126489782,

%T 690800294,3533497602,19797058950,103613461346,587718236894,

%U 3119919914130,17784977065082,95276354415258,543743313418490

%N Number of (n+1)X(2+1) 0..6 arrays with every 2X2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 18

%C Column 2 of A233997

%H R. H. Hardin, <a href="/A233991/b233991.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

%e ..5..3..5....0..4..0....5..0..0....0..5..0....3..3..1....6..0..4....0..1..6

%e ..0..0..0....6..4..6....6..5..3....2..5..6....0..6..6....6..6..4....5..4..1

%e ..6..0..6....1..1..1....5..0..0....0..5..0....3..3..1....6..0..4....0..1..6

%e ..1..1..1....0..6..0....5..6..0....2..5..6....0..6..6....4..4..6....5..4..1

%e ..4..6..4....2..2..2....1..2..2....5..0..5....3..3..1....6..0..4....1..0..5

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 18 2013

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 May 18 23:58 EDT 2021. Contains 344009 sequences. (Running on oeis4.)