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Leibniz harmonic triangle
triangular arrangement L(r,c) of unit fractions, where (r,c) are row and column numbers, such that L(r, 1) = 1/r and L(r, c) = L(r − 1, c − 1) − L(r, c − 1)
Pronunciation
/ˈlibnɪz hɑrˈmɑnɪk ˈtraɪˌæŋɡəl/
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