No chaos in this spiral! Today's fractal is an example of a repetitive regimented self-similarity.
Note that banding was caused by a high outside=fmod proximity value-0.5.
To see it pre-rendered go to http://maxitersfractalfollies.blogspot.com
And now for the numbers.
fract027.gif       { ; metallic spiral
                     ; blank
                     ; calctime   0:11:37.21
                     ; created Apr 16, 2010
                     ;  Fractint Version 2004 Patchlevel 9
  reset=2004 type=formula formulafile=_k.frm formulaname=kg2204
  function=cosh/tanh center-mag=0.28035/-1.17195/13.33333
  params=-0.6006347849971008/-0.3339030121768853/0.5191503646961882/0.1598\
  254341257973 float=y maxiter=1500 inside=0 proximity=0.5
  outside=fmod
  colors=000111333444666777999AAACCCDDDFFFHHHIIIJJJLLLMMMOOOPPPRRRSSSUUUVV\
  VWWWYYYZZZ___```bbbcccdddeeefffhhhiiijjjkkklllmmmnnnoooppppppqqqrrrsssss\
  stttuuuuuuvvvwwwwwwxxxxxxxxxyyyyyyyyyzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz\
  zzzzyyyyyyyyyxxxxxxxxxwwwwwwvvvuuuuuutttssssssrrrqqqppppppooonnnmmmlllkk\
  kjjjiiihhhfffeeedddcccbbb```___ZZZYYYWWWVVVUUUSSSRRRPPPOOOMMMLLLJJJIIIHH\
  HFFFDDDCCCAAA999777666444333111000111333444666777999AAACCCDDDFFFHHHIIIJJ\
  JLLLMMMOOOPPPRRRSSSUUUVVVWWWYYYZZZ___```bbbcccdddeeefffhhhiiijjjkkklllmm\
  mnnnoooppppppqqqrrrsssssstttuuuuuuvvvwwwwwwxxxxxxxxxyyyyyyyyyzzzzzzzzzzz\
  zzzzzzzzzzzzzzzzzzzzzzzzzzzzyyyyyyyyyxxxxxxxxxwwwwwwvvvuuuuuutttssssssrr\
  rqqqppppppooonnnmmmlllkkkjjjiiihhhfffeeedddcccbbb```___ZZZYYYWWWVVVUUUSS\
  SRRRPPPOOOMMMLLLJJJIIIHHHFFFDDDCCCAAA999777666444333111
  }
frm:kg2204 {
  z=pixel^p1:
  z=fn1(z)/p1 ^ fn2(z)^p2 + c
  |z| <= p2
  ;SOURCE: kg22.frm
}
    -Max Iter

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