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A339134
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Indices in A338884 where records occur.
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0
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OFFSET
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1,2
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COMMENTS
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It seems that A338884(a(n)) = n and 3*sqrt(log(a(n)))/n ~ O(1).
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LINKS
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PROG
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(Python)
from sympy import isprime
def search(n):
k = 1
while 1:
i = k*n + 1
while i < k*n + k:
if isprime(i) == 1: return i
i += 2
k = 2*k
a_rec = 0
n = 1
while 1:
m = search(n)
a = m.bit_length() - n.bit_length()
if a > a_rec:
print(n)
a_rec = a
n += 1
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CROSSREFS
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KEYWORD
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nonn,base,more
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AUTHOR
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STATUS
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approved
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