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A145173 Least a(n) such that p(n)#*(p(n)#-a(n))-1 is prime with p(i)#=i-th primorial. +0
2
0, 1, 2, 1, 2, 4, 2, 1, 4, 9, 1, 2, 14, 2, 3, 9, 2, 9, 24, 1, 25, 1, 7, 8, 2, 52, 14, 13, 42, 7, 22, 8, 5, 20, 36, 9, 8, 10, 36, 56, 2, 14, 42, 7, 2, 128, 159, 45, 49, 1, 16, 69, 211, 80, 19, 13, 3, 12, 25, 21, 106, 32, 39, 26, 21, 23, 5, 22, 66, 43, 45, 139, 350, 38, 26, 145, 19, 142 (list; graph; listen)
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Last modified December 8 08:31 EST 2009. Contains 170430 sequences.


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