According to Boyer
A HISTORY OF MATHEMATICS, 1968 edition, page 439,
the harmonic triangle
fascinated Leibniz:
1/1 1/2 1/3 1/4 1/5 1/6 . . .
1/2 1/6 1/12 1/20 1/30 . . .
1/3 1/12 1/30 1/60 . . .
1/4 1/20 1/60 . . .
1/5 1/60 . . .
1/6 . . .
Is there an account of the harmonic triangle anything like the short book
on the Arithmetic Triangle of Pascal?
Did this triangle originate with Leibniz? In what publication does he
discuss it?
* * *
In Annapolis, several years ago, one could find bumper stickers on cars
that read:
Honk if you love Leibniz.
Is the word *honk* known to our non-native-English speakers? I suppose
that it is onomotopoetic. Have such signs been seen outside of Annapolis?
For such a sign might have originated at St. John's College here since
Leibniz is read in our all-required curriculum.
Best wishes from Annapolis,
Sam Kutler