cp's OEIS Frontend

A195224 Number of lower triangles of a 6 X 6 integer array with each element differing from all of its diagonal, vertical, antidiagonal and horizontal neighbors by n or less and triangles differing by a constant counted only once.

%I A195224 #11 Oct 07 2019 01:57:30
%S A195224 10654607,149824887097,103565705397639,14572563308953245,
%T A195224 774355028021195459,21369796486647028143,368448539594713382337,
%U A195224 4459232627488479738855,40959753617162679435381,301639473232633417395629
%N A195224 Number of lower triangles of a 6 X 6 integer array with each element differing from all of its diagonal, vertical, antidiagonal and horizontal neighbors by n or less and triangles differing by a constant counted only once.
%C A195224 Row 6 of A195220.
%C A195224 a(n) is an Ehrhart polynomial of degree 20. - _Robert Israel_, Oct 07 2019
%H A195224 R. H. Hardin, <a href="/A195224/b195224.txt">Table of n, a(n) for n = 1..17</a>
%e A195224 Some solutions for n=5:
%e A195224    0                  0                  0                  0
%e A195224    1  1              -5 -3              -3 -4               3  2
%e A195224    2  1  2           -1 -1 -5           -1 -1 -2            6  5  1
%e A195224    4  0  3  0        -1 -2 -1 -5         4  2  0 -2         6  1  2 -2
%e A195224    3 -1  4  4  1      0  1 -1 -3 -4     -1  4  2 -2 -5      1  2  1  0 -4
%e A195224    0 -1  4  1  5  5   1 -4  1  0  1 -2  -1  2  1  0 -2 -5  -2  0  3 -1 -5 -3
%K A195224 nonn
%O A195224 1,1
%A A195224 _R. H. Hardin_, Sep 13 2011