z4 Julia GasketWritten by Paul BourkeInspired by "XenoDream G Thornton" March 2019 
 The following Julia style fractal is based upon the following complex valued series, the highest power term being 4. The image is a portion of the complex plane where z0 are points on that complex plane.  
 ![]() c = -2 + 0i 
 ![]() c = -1 + 0i 
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