trizen
87de3b82b9
new file: oeis-research/Amiram Eldar/Odd numbers that are not safe primes such that p-1 | k-1 or k-1 | p-1 for every prime p | 2^(k-1)-1/prog.sf
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2 years ago | |
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| a(n) is obtained by applying the map k -> composite(k) n times, starting at n | 2 years ago | |