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A119265
Triangle read by rows, 1<=k<=n: T(n,k) = k-th divisor of the smallest odd number with exactly n divisors, A038547.
3
1, 1, 3, 1, 3, 9, 1, 3, 5, 15, 1, 3, 9, 27, 81, 1, 3, 5, 9, 15, 45, 1, 3, 9, 27, 81, 243, 729, 1, 3, 5, 7, 15, 21, 35, 105, 1, 3, 5, 9, 15, 25, 45, 75, 225, 1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 1, 3, 9, 27, 81, 243, 729, 2187, 6561, 19683, 59049, 1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105
OFFSET
1,3
LINKS
Jean-François Alcover, Table of n, a(n) for n = 1..5050
FORMULA
T(n,1) = 1; T(n,n) = A038547(n);
T(n,k) = A027750(A006218(A038547(n)-1) + k).
MATHEMATICA
A038547 = Cases[Import["https://oeis.org/A038547/b038547.txt", "Table"], {_, _}][[All, 2]];
row[n_] := row[n] = Divisors[A038547[[n]]];
T[n_, k_] := row[n][[k]];
Table[T[n, k], {n, 1, 100}, {k, 1, n}] // Flatten (* Jean-François Alcover, Sep 19 2021 *)
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Reinhard Zumkeller, May 11 2006
STATUS
approved