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!)
A265984 Number of 4Xn integer arrays with each element equal to the number of horizontal, diagonal and antidiagonal neighbors less than itself. 1

%I

%S 1,809,13894,282056,40743954,3698768651,185874780351,12575751772562,

%T 1085132072879774,80030985885837392,5555437439270864557,

%U 416136624561279441861,31632055622516039033176,2327745994261256565541305

%N Number of 4Xn integer arrays with each element equal to the number of horizontal, diagonal and antidiagonal neighbors less than itself.

%C Row 4 of A265981.

%H R. H. Hardin, <a href="/A265984/b265984.txt">Table of n, a(n) for n = 1..134</a>

%e Some solutions for n=3

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

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

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

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

%Y Cf. A265981.

%K nonn

%O 1,2

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 21 20:10 EDT 2021. Contains 347598 sequences. (Running on oeis4.)