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A119499 Records in A114717. 3

%I #9 Mar 03 2016 02:54:01

%S 1,2,5,14,48,2452,183958,4877756,17454844,20071150430,409158464142,

%T 129586764260850,269333638458151764,1868569007661198289216,

%U 326772188939088357313806,48024472200935599107697461965204,11653191042139941668276738496190656

%N Records in A114717.

%C Term a(10) was taken from A114716(4) (= A114715(3,4) = A114715(4,3)).

%H Alois P. Heinz, <a href="/A119499/b119499.txt">Table of n, a(n) for n = 1..20</a>

%t b[s_] := b[s] = If[Length[s] < 2, 1, Sum[If[Length[Select[s, Mod[#, x] == 0 &]] == 1, b[Complement[s, {x}]], 0], {x, s}]]; a[n_] := Module[{l, m}, l = Sort[FactorInteger[n], #1[[2]] > #2[[2]] &]; m = Product[Prime[i]^l[i]][[2]], {i, 1, Length[l]}]; b[Divisors[m] // Rest // Most]]; A119499 = Reap[For[record = 0; k = 1, k < 5000, k++, If[a[k] > record, record = a[k]; Print[k, " ", record]; Sow[record]]]][[2, 1]] (* _Jean-François Alcover_, Mar 03 2016, after _Alois P. Heinz_ *)

%Y a(n) = A114717(A119500(n)). Subset of A119841.

%K nonn

%O 1,2

%A _Antti Karttunen_, May 26 2006

%E a(11)-a(17) from _Alois P. Heinz_, Aug 06 2012

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Last modified April 19 23:40 EDT 2024. Contains 371798 sequences. (Running on oeis4.)