The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A265957 Number of nX3 integer arrays with each element equal to the number of horizontal, vertical, diagonal and antidiagonal neighbors less than itself. 1

%I #4 Dec 19 2015 07:48:31

%S 5,235,2031,31940,1002328,17873307,329266534,7935241725,162833269398,

%T 3241416484700,70876286404463,1494327583037059,30782640480213077,

%U 653374627522113949,13795598605189141491,288087129209981654443

%N Number of nX3 integer arrays with each element equal to the number of horizontal, vertical, diagonal and antidiagonal neighbors less than itself.

%C Column 3 of A265960.

%H R. H. Hardin, <a href="/A265957/b265957.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

%e ..4..1..2....3..8..2....0..8..4....1..1..5....4..0..5....4..0..3....0..8..0

%e ..2..8..4....2..7..3....4..0..3....1..1..4....4..0..3....0..8..4....0..0..0

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

%Y Cf. A265960.

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 19 2015

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.

Last modified June 18 02:03 EDT 2024. Contains 373468 sequences. (Running on oeis4.)