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A098142
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Numbers n such that (p*(q-1)+(p-1)*q)/2 is prime, where p and q are consecutive odd primes, p<q and p_n is the n-th prime.
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2
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2, 3, 5, 9, 13, 15, 17, 26, 35, 43, 56, 60, 80, 81, 83, 86, 89, 101, 102, 104, 120, 140, 152, 157, 170, 178, 191, 201, 204, 215, 219, 223, 238, 252, 286, 293, 296, 324, 329, 350, 359, 373, 383, 392, 395, 398, 412, 416, 424, 444, 458, 468, 479, 487, 497, 503, 514
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