cp's OEIS Frontend

A195283 Number of lower triangles of a 7X7 integer array with each element differing from all of its vertical and horizontal neighbors by n or less and triangles differing by a constant counted only once.

%I A195283 #7 Jul 22 2025 12:44:09
%S A195283 48439766655,30812488814662125,241338657495589799523,
%T A195283 203368493873412168605037,44727914263743356875711779,
%U A195283 4011033701337366560359871745,189393562987102056163761489375
%N A195283 Number of lower triangles of a 7X7 integer array with each element differing from all of its vertical and horizontal neighbors by n or less and triangles differing by a constant counted only once.
%C A195283 Row 7 of A195278
%H A195283 R. H. Hardin, <a href="/A195283/b195283.txt">Table of n, a(n) for n = 1..8</a>
%e A195283 Some solutions for n=5
%e A195283 ...0.....................0.....................0
%e A195283 ..-2.-6.................-1..2.................-5-10
%e A195283 ...1.-4.-2..............-6.-3.-6..............-2.-5.-1
%e A195283 ...1.-2..2..7...........-2.-4.-3.-1...........-7.-6.-5..0
%e A195283 ..-2.-7.-2..3.-2.........3..0..1..3..0........-9.-8.-8.-5.-9
%e A195283 ..-6-10.-6.-1.-5.-4......8..3..0.-1.-5-10.....-8.-6.-5.-9-12-17
%e A195283 ..-6.-8.-3..1..0.-4.-3...4..2..4..2.-3.-5.-2.-13-11.-7.-5.-7-12-13
%K A195283 nonn
%O A195283 1,1
%A A195283 _R. H. Hardin_ Sep 14 2011