[math-fun] r = (cos(2 t) + b)^2 + (c cos(t) + d)^2

I spazzed again!

I guess this means nobody tried to plot it for b = 0.17108, [...] or b = 3.83214, [...]

Sorry!! That's b = 3.83214, c = 1.41969, d = 5.42912, (and) b = 5.40849, c = 1.81059, d = 6.07139 .

For the former, there's a shift and scale which intersects Moss's egg fourteen times, (http://gosper.org/egg14.gif) and twelve for the latter, (http://gosper.org/egg12.gif) yet the latter is a better fit. --rwg