Just as the UK Government calls the oldest member of Parliament “Father of the House”, I’m going t lay claim to the title of “father of the board”.
However, it pains me even to type the number out (as I am is a state of permanent disbelief) so in the very unlikely event there is a challenge to this claim, here is a simple computation
(((number of notes in a pentatonic scale+165) /2)-7)
For potential contenders who can’t be ar***d to do that, the day before Jimmy Page ( Led Zep)
for you