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A107636 Lesser prime in pair prime(n) +/- n for some n. 1

%I

%S 3,7,43,139,251,683,1549,2273,2393,2731,3217,3529,3943,4339,4723,4799,

%T 4909,5531,5801,7907,9421,10009,11549,12263,12791,13441,14011,14683,

%U 15559,18089,19087,20921,22271,22391,23279,24001,24107

%N Lesser prime in pair prime(n) +/- n for some n.

%C Cf. A107637 Larger prime in pair prime(n) +/- n for some n; A064403 Prime(n) + n and prime(n) - n are both primes.

%F a(n) = prime(A064403(n)) - A064403(n)

%e a(1) = 3 because A064403(1) = 4 and prime(4) - 4 = 7 - 4 = 3

%Y Cf. A064403, A107637.

%K nonn

%O 1,1

%A _Zak Seidov_, May 19 2005

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Last modified November 27 16:35 EST 2021. Contains 349394 sequences. (Running on oeis4.)