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A344008 Triangle of numerators corresponding to A344007. 1

%I #21 Jun 10 2021 16:11:52

%S 1,1,1,1,1,1,1,1,1,1,2,1,1,1,1,1,2,1,1,1,1,1,3,2,1,1,1,1,3,1,3,1,2,1,

%T 1,1,1,3,1,3,1,1,2,1,1,1,1,3,1,1,3,1,1,2,1,4,1,1,3,1,1,1,3,1,1,2,1,4,

%U 1,1,3,1,1,1,1,3,1,1,5,1,4,1,1,3,1,1,1,1,1,3,1

%N Triangle of numerators corresponding to A344007.

%e The triangle underlying A344007 begins:

%e 1

%e 1/2, 1/2

%e 1/6, 1/3, 1/2

%e 1/6, 1/4, 1/4, 1/3

%e 2/15, 1/6, 1/5, 1/4, 1/4

%e 1/12, 2/15, 1/6, 1/6, 1/5, 1/4

%e 1/12, 3/28, 2/15, 1/7, 1/6, 1/6, 1/5

%e 3/40, 1/12, 3/28, 1/8, 2/15, 1/7, 1/6, 1/6

%e 1/18, 3/40, 1/12, 3/28, 1/9, 1/8, 2/15, 1/7, 1/6

%e 1/18, 1/15, 3/40, 1/12, 1/10, 3/28, 1/9, 1/8, 2/15, 1/7

%e ...

%e The numerators are:

%e 1

%e 1, 1

%e 1, 1, 1

%e 1, 1, 1, 1

%e 2, 1, 1, 1, 1

%e 1, 2, 1, 1, 1, 1

%e 1, 3, 2, 1, 1, 1, 1

%e 3, 1, 3, 1, 2, 1, 1, 1

%e 1, 3, 1, 3, 1, 1, 2, 1, 1

%e 1, 1, 3, 1, 1, 3, 1, 1, 2, 1

%e ...

%o (PARI) lista(nn) = {my(row, nrow, drow); for (n=1, nn, if (n==1, row = [1], k = vecmax(row); nrow = row; nrow[n-1] = 1/n; nrow = concat(nrow, k - 1/n); row = vecsort(nrow);); drow = apply(numerator, row); for (k=1, #drow, print1(drow[k], ", ")););} \\ _Michel Marcus_, Jun 09 2021

%Y Cf. A003506, A344007.

%K nonn,tabl

%O 1,11

%A _Evan Lee_, Jun 09 2021

%E Corrected by _Hugo Pfoertner_ and _Michel Marcus_, Jun 09 2021

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Last modified April 23 15:20 EDT 2024. Contains 371916 sequences. (Running on oeis4.)