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 A033299 Smallest safe prime ((p-1)/2 is also prime) > n. 4
 5, 5, 5, 5, 7, 7, 11, 11, 11, 11, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 83, 83, 83, 83, 83, 83, 83, 83, 83 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Michael S. Branicky, Table of n, a(n) for n = 1..10000 MAPLE with(numtheory); safeprime(n); PROG (Python) from sympy import isprime, nextprime def a(n):   p = nextprime(n)   while not isprime((p-1)//2): p = nextprime(p)   return p print([a(n) for n in range(1, 68)]) # Michael S. Branicky, May 05 2021 CROSSREFS Sequence in context: A139259 A105444 A240233 * A293982 A071577 A003870 Adjacent sequences:  A033296 A033297 A033298 * A033300 A033301 A033302 KEYWORD nonn,changed AUTHOR EXTENSIONS a(57) and beyond from Michael S. Branicky, May 05 2021 STATUS approved

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Last modified May 16 18:13 EDT 2021. Contains 343949 sequences. (Running on oeis4.)