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A098040
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First occurrence of numbers p such that p = (prime(n)+ prime(n+k))/2 is prime for prime indices n=2, 3, 5... and k=1, 2, ...
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0
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5, 7, 11, 139, 11, 13, 449, 17, 23, 83, 23, 29, 331, 31, 67, 53, 37, 59, 41, 43, 113, 53, 509, 53, 269, 59, 83, 331, 67, 167, 71, 173, 89, 149, 83, 89, 101, 223, 311, 97, 101, 283, 101, 107, 113, 151, 137, 131, 157, 137, 127, 149, 137, 271, 137, 421, 197, 149, 257
(list; graph; refs; listen; history; internal format)
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