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 A048880 Primes of form pq+2 where p and q are consecutive primes. 12
 17, 37, 79, 223, 439, 4759, 22501, 32401, 53359, 57601, 60493, 72901, 77839, 95479, 99223, 159199, 164011, 176401, 194479, 239119, 324901, 378223, 416023, 497011, 680623, 756853, 804511, 1115113, 1664101, 1742401, 2223079 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS All terms > 17 are congruent to 1 mod 6. (Zak Seidov) LINKS T. D. Noe, Table of n, a(n) for n=1..1000 EXAMPLE 487*491+2=239119. MAPLE with (numtheory): for n from 1 to 1000 do if (tau(ithprime(n)*ithprime(n+1)+2)=2) then print(ithprime(n), ithprime(n+1), ithprime(n)*ithprime(n+1)+2); fi; od; MATHEMATICA Reap[Do[If[PrimeQ[p=Prime[k]*Prime[k+1]+2], Sow[p]], {k, 1, 430}]][[2, 1]] (* Zak Seidov Dec 03 2010 *) CROSSREFS Cf. A051507. Sequence in context: A200865 A319245 A093930 * A075892 A155143 A261529 Adjacent sequences:  A048877 A048878 A048879 * A048881 A048882 A048883 KEYWORD easy,nonn AUTHOR Herman H. Rosenfeld (herm3(AT)pacbell.net) EXTENSIONS Corrected and extended by Joe DeMaio (jdemaio(AT)kennesaw.edu). STATUS approved

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Last modified April 23 10:57 EDT 2021. Contains 343204 sequences. (Running on oeis4.)