First Occurrence Of Floor(m/d(m))
Leroy Quet
qq-quet at mindspring.com
Sat Dec 30 20:02:14 CET 2006
I just submitted this sequence:
>%I A126888
>%S A126888 1,5,7,28,11,13,44,17,19,63,23,51,55,29
>%N A126888 a(n) is the smallest positive integer such that
>floor(a(n)/d(a(n))) = n, where d(m) is the number of positive divisors of m.
>%C A126888 Does every term have a value? ie, Does every positive integer n
>equal floor(m/d(m)) for some m?
>%Y A126888 A126889,A078709
>%O A126888 1
>%K A126888 ,more,nonn,
(Hopefully I didn't errr...)
Questions:
1) As noted in the C-line, I don't know if every term has a value. Do
they? (I guess if some n's don't equal any floor(m/d(m))'s, then those
terms of the sequence can just be 0, an arbitrary fix.)
2) Is there a related sequence of LARGEST positive integers {a(n)} where
floor(a(n)/d(a(n))) = n?
In other words, is the number of m's where floor(m/d(m)) = n finite for
all n? For some n?
(I bet this can all be answered by Hardy and Wright, but I don't have a
copy.)
Thanks,
Leroy Quet
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