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 A145174 Least a(n) such that p(n)#*(p(n)#-a(n))-1 and p(n)#*(p(n)#-a(n))+1 are twin primes with p(i)#=i-th primorial 1

%I

%S 0,1,3,1,5,4,44,13,31,173,25,19,75,99,47,77,166,468,43,1,344,7,44,398,

%T 434,901,246,246,91,755,1066,839,1605,560,460,1649,426,1203,732,1055,

%U 130,1821,1645,360,4779,2414,272,668,2410,3957,2514,685,3484,3139,5680

%N Least a(n) such that p(n)#*(p(n)#-a(n))-1 and p(n)#*(p(n)#-a(n))+1 are twin primes with p(i)#=i-th primorial

%H Pierre CAMI, <a href="/A145174/b145174.txt">Table of n, a(n) for n = 1..200</a>

%e 2*3*(2*3-1)-1=29 prime as 31 so a(2)=1

%Y Cf. A144946, A144947, A145173

%K nonn

%O 1,3

%A _Pierre CAMI_, Oct 03 2008

%E Corrected and extended by Ray Chandler, Jan 12 2009

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Last modified December 5 12:01 EST 2022. Contains 358586 sequences. (Running on oeis4.)