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Omni-MATH / You want to arrange the numbers 1,2,3,…,25 in a sequence with the following property: if n is divisible by m, then the nth number is divisible by the m th number. How many such seq…

Problem

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problem

You want to arrange the numbers 1,2,3,…,251,2,3, \ldots, 25 in a sequence with the following property: if nn is divisible by mm, then the nnth number is divisible by the mm th number. How many such sequences are there?
Plain-text mathematical notation (without MathML)
You want to arrange the numbers 1,2,3,…,25 in a sequence with the following property: if n is divisible by m, then the nth number is divisible by the m th number. How many such sequences are there?
Original LaTeX notation
You want to arrange the numbers $1,2,3, \ldots, 25$ in a sequence with the following property: if $n$ is divisible by $m$, then the $n$th number is divisible by the $m$ th number. How many such sequences are there?

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Source and history

task_id
674406de-0546-5bf6-8477-7b3566a60a6b
task_key
test--674406de-0546-5bf6-8477-7b3566a60a6b
task_revision_id
1
config / split
/ test

Official source

initial import