Odd squarefree semiprimes: Difference between revisions
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Found 194 Odd squarefree semiprimes.
done...
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=={{header|Sidef}}==
<lang ruby>func odd_squarefree_almost_primes(upto, k=2) {
k.squarefree_almost_primes(upto).grep{.is_odd}
}
with (1e3) {|n|
var list = odd_squarefree_almost_primes(n, 2)
say "Found #{list.len} odd square-free semiprimes <= #{n.commify}:"
say (list.first(10).join(', '), ', ..., ', list.last(10).join(', '))
}</lang>
{{out}}
<pre>
Found 194 odd square-free semiprimes <= 1,000:
15, 21, 33, 35, 39, 51, 55, 57, 65, 69, ..., 951, 955, 959, 965, 973, 979, 985, 989, 993, 995
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