Tinkering around with CoffeeScript, I made a tool that takes a note to use as the root and gives you the rest of the notes in the minor blues scale.

musicScale.coffee

numeralFlat=["I","IIb","II","IIIb","III","IV","Vb","V","VIb","VI","VIIb","VII"]
numeralSharp=["I","I#","II","II#","III","IV","IV#","V","V#","VI","VI#","VII"]
flat=["Ab","A","Bb","B","C","Db","D","Eb","E","F","Gb","G"]
sharp=["G#","A","A#","B","C","C#","D","D#","E","F","F#","G"]

bluesScaleMinor = (root, display = "flat") ->
  if display is "flat" or "sharp"
    rootIndex = flat.indexOf(root)
  else
    rootIndex = 0

  I = rootIndex
  IIIb = rootIndex + 3
  IV = rootIndex + 5
  Vb = rootIndex + 6
  V = rootIndex + 7
  VIIb = rootIndex + 10

  notes = [I,IIIb, IV, Vb, V,VIIb]

  for note, i in notes
    if note > 12
      notes[i] = note - 12

  notes = setDisplayType notes, display

toFlat = (scale) ->
  for note, i in scale
    scale[i] = flat[note]

toSharp = (scale) ->
  for note, i in scale
    scale[i] = sharp[note]

toNumeralFlat = (scale) ->
  for note, i in scale
    scale[i] = numeralFlat[note]

toNumeralSharp = (scale) ->
  for note, i in scale
    scale[i] = numeralSharp[note]

setDisplayType = (scale, display) ->
  switch display
    when "flat" then toFlat scale
    when "sharp" then toSharp scale
    when "numeralFlat" then toNumeralFlat scale
    when "numeralSharp" then toNumeralSharp scale

console.log (bluesScaleMinor "G")