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!)
A249260 Number of length 5+6 0..n arrays with every seven consecutive terms having five times the sum of some two elements equal to two times the sum of the remaining five. 0

%I #5 Sep 03 2022 22:14:03

%S 2,395,2048,10673,37442,108563,567504,2093337,6100670,15506047,

%T 33790602,69073383,126818950,264675031,492530342,881242457,1457336916,

%U 2343675015,3564233298,5318404897,8109729696,12154433653,17479577394,24792007427

%N Number of length 5+6 0..n arrays with every seven consecutive terms having five times the sum of some two elements equal to two times the sum of the remaining five.

%C Row 5 of A249255.

%e Some solutions for n=6

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

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

%e ..1....4....4....3....3....1....1....2....1....3....3....3....4....2....3....1

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

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

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

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

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

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

%e ..1....4....4....3....3....1....1....2....1....3....3....3....4....2....3....1

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

%Y Cf. A249255.

%K nonn

%O 1,1

%A _R. H. Hardin_, Oct 23 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 May 4 23:54 EDT 2024. Contains 372257 sequences. (Running on oeis4.)