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 A100870 Triangle read by rows: T(n,k) = minimal sum of denominators needed to write k/n (for 1 <= k <= n with gcd(k,n) = 1) as a sum of unit fractions. 2

%I

%S 2,3,8,4,2,6,5,18,12,17,6,3,2,8,5,7,32,39,16,23,36,8,4,12,2,10,6,14,9,

%T 24,3,12,20,8,17,23,10,5,15,18,2,12,7,17,20,11,72,48,36,47,24,35,95,

%U 72,60,12,6,4,3,10,2,7,8,6,5,12,13,98,71,82,95,101,28,41,47,58,71,96,14,7

%N Triangle read by rows: T(n,k) = minimal sum of denominators needed to write k/n (for 1 <= k <= n with gcd(k,n) = 1) as a sum of unit fractions.

%H <a href="/index/Ed#Egypt">Index entries for sequences related to Egyptian fractions</a>

%e T(5,2) = 18 because the minimal sum of unit fractions is 2/5 = 1/3 + 1/15 and 3+15=18.

%Y Cf. A100869, A100871.

%K nonn,tabl

%O 1,1

%A _Franklin T. Adams-Watters_, Nov 20 2004

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Last modified January 26 12:17 EST 2022. Contains 350598 sequences. (Running on oeis4.)