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val = 8;
[x,y] = meshgrid(1:0.1:val, -10:0.1:10);
fun = @(n) 6.^(n-1).*(n+4).*(n+6).^4;
surf(x,y,fun(x))
%Adjust limits and ticks
xlim([1 val])
xticks(1:val)
zlim([0 2e10])
%Adjust the view
view(135,45)
