%I#9 2018年5月22日03:47:32
%S 5771798118234910421674211559134975233664424387831605,
%电话:1910650453859385772649508913015601552296212913675454983,
%电话:58603994959075823625136985838172020860675729208734581414469698982357841257231
%N由7个元素组成的-N..N数组的数量,相邻元素的差异也在-N..N.中。
%A201042第7行。
%H R.H.Hardin,n表,n=1..210的a(n)</a>
%F经验:a(n)=(17141/630)*n^7+(17141/180)*n^6+(28177/180)*n^5+(2759/18)*n^4+(17299/180)*n^3+(6929/180)*n^2+(1921/210)*n+1。
%F来自Colin Barker_的推测,2018年5月22日:(开始)
%传真:x*(577+13365*x+54657*x^2+54531*x^3+13449*x^4+541*x^5+9*x^6-x^7)/(1-x)^8。
%当n>8时,F a(n)=8*a(n-1)-28*a。
%F(结束)
%e n=2的一些解决方案:
%e。。1...-1....0....1....2....2....0....0...-2....1...-1....0....2...-2....0....1
%e。。0...-2....0....1....0....2....2....1...-2....2....1....0....2...-1...-1....0
%e。。0....0....0....2...-2....2....0....1....0....0....1...-1....2....1...-1...-2
%e。。0....2...-1....1...-1....0...-1....0....0....0....1....0....2....2...-2...-1
%e、-1....2....0....1....1...-1...-1...-1....2....2....2....1....1....0....0....0
%e、-2....2....0....1....0....1....1...-2....0....0....1....1....1....1....2....0
%e、-2....2....1....1...-1...-1...-1...-1....2...-2...-1...-1...-1....2....2...-2
%Y参考A201042。
%K nonn公司
%O 1,1
%A R.H.Hardin,2011年11月26日
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