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A073128 Integer quotients arising in A063986. 1
0, 1, 1, 5, 5, 49, 118, 121, 2406, 2698, 4182, 4946, 153627, 3087192, 8203485, 38394376, 487844934, 2822741576, 4140154385, 4397137572, 8583966231 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,4
LINKS
FORMULA
a(n)=Sum[cototient[j], j=1..A063986(n)]/A063986(n)
EXAMPLE
n=15, A063986(15)=41846733, sum of first 41846733 cototients is s=343289046464505, a(15)=s/41846733. Only in knowledge of either the quotients or of partial sums of cototients is it possible to continue A063986 without recomputing previous terms!
CROSSREFS
Sequence in context: A178693 A065238 A196388 * A189749 A368894 A009390
KEYWORD
more,nonn
AUTHOR
Labos Elemer, Jul 16 2002
EXTENSIONS
Changed A063896 to A063986 and a(16)-a(21) from Donovan Johnson, May 11 2010
STATUS
approved

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Last modified April 18 13:50 EDT 2024. Contains 371780 sequences. (Running on oeis4.)