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Top Questions
32
votes
A question related to the Hofstadter–Conway \$10000 sequence
nt.number-theory
sequences-and-series
limits-and-convergence
integer-sequences
asked Jul 28, 2020 at 8:56
mathoverflow.net
18
votes
Numbers of the form $x^2(x-1) + y^2(y-1) + z^2(z-1)$ with $x,y,z\in\mathbb Z$
nt.number-theory
conjectures
asked Jul 22, 2020 at 9:19
mathoverflow.net
6
votes
On nontotient Fibonacci numbers
nt.number-theory
integer-sequences
divisors-multiples
asked Aug 2, 2020 at 12:43
mathoverflow.net
6
votes
Is there a positive odd $n$ such that $\sigma(\sigma(n)) = \sigma(\sigma(n)-n)+\sigma(n)$?
nt.number-theory
integer-sequences
divisors-multiples
asked Aug 4, 2020 at 7:40
mathoverflow.net
6
votes
Does $a_{i}(n)$ hit every positive integers infinitely many times for all $i\ge1$?
nt.number-theory
integer-sequences
asked Jun 29, 2021 at 18:30
mathoverflow.net
Top Answers
No answers with score of 5 or more
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