Spiralesque        { ; Classic FOTD, 07-May-01 Rating (4)
                     ; time=0:09:10.69--SF5 on a P200
  reset=2001 type=formula 
  formulaname=MandelbrotMix4 function=ident passes=1
  center-mag=+1.936911287737238/+7.881112847818978/7\
  .861229e+008/1/-147.5 params=-1.5/1.2/1.5/1.3/0/800
  float=y maxiter=900 inside=0
  logmap=174 periodicity=10
  colors=000P00mmPmmHmmJmkLmiLmgNkeNedP`bPV`RNZTHXTC\
  VV6TV0RX0PX00K0AK0GN6ACH42T00d00iA0mNHq``ukoxtzzzz\
  xwzuuzqqzkixgbsdVk`NeeRkiVomXss`vvbzzezzizzkzzozzq\
  zzuzzvzzxzzzzzzzuzzmzzezzZzzPzzHzzAzz2zz0zz0zz0zz0\
  zz0zz2zz8zzGzzNxzVuz`oxgkvoguvdqz`ozXkzTizPgzLkzHm\
  uGqkCsbAsV6pL2mC0m20m00m00m00m00m04m0Ao0Hq0Ns4VoAb\
  kEgeJobNuZTzVXzPbzLezHizEgzLezTdz`bzg`xoZsvXmzVgzV\
  bzX`zXZzXXzXVzXVzXTzXRzZPzZNzZNzZLzZJzZHzZGzZGzgCz\
  qAzz6zz4zz0zs0zk0vd0uX0qR0oJ0kC0i40e00d00b00V20N80\
  GE8AJH2PP0VZ0`e0Pb0G`H6ZZC``G`bJbdNbeRbgVdiZdkbdmg\
  eokeqogssguvgvzixzizzizzeuzdqx`muZiqVeoTbkPZgNVeJR\
  bHNZEJXCGVALV8PT8VT6ZR4dR4gR2mP0qP0vN0zN0zL0zL0zL0\
  zP0zT6zXCz`HzdNxeTsiZomdkqikuouvszkvz`xzPzzLvzHuzG\
  szCqz8oz6mz2kz0kz0kz0kz0kz0kz6kzEkzLkzTmz`ozgqzosz\
  suzuvzvxzxzuzzmzzezzZzzRzzJzzCzz4zz0zz0zz0zz0zz0zz\
  4zzCuzJqzRmzXgzddzkZzsVzz
  }

frm:MandelbrotMix4 {; Jim Muth
a=real(p1), b=imag(p1), d=real(p2), f=imag(p2),
g=1/f, h=1/d, j=1/(f-b), z=(-a*b*g*h)^j,
k=real(p3)+1, l=imag(p3)+100, c=fn1(pixel):
z=k*((a*(z^b))+(d*(z^f)))+c,
|z| < l
}