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 A128949 Smallest primes > 2^n that are twin prime members. 1
 3, 5, 11, 17, 521, 1031, 65537, 8388617, 862718293348820473429344482784628181556388621521298319395315527975161, 56539106072908298546665520023773392506479484700019806659891398441363833147 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS A prime is included only if it is both the smallest prime greater than 2^n and also the smaller of a twin-prime pair. - Harvey P. Dale, Aug 24 2013 LINKS FORMULA a(n) = A014210(A128944(n)). MATHEMATICA Select[NextPrime[2^Range[250]], PrimeQ[#+2]&] (* Harvey P. Dale, Aug 24 2013 *) PROG (PARI) g(n, b)=for(x=1, n, y=nextprime(b^x); if(ispseudoprime(y+2), print1(y", "))) CROSSREFS Cf. Intersection of A014210 (Next prime after 2^n) and A001097 (Twin primes). Sequence in context: A347078 A270778 A267030 * A070316 A298121 A244473 Adjacent sequences:  A128946 A128947 A128948 * A128950 A128951 A128952 KEYWORD nonn AUTHOR Cino Hilliard, Apr 28 2007 EXTENSIONS Edited by Ray Chandler, May 12 2007 One more term (a(10)) from Harvey P. Dale, Aug 24 2013 STATUS approved

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Last modified September 26 20:34 EDT 2021. Contains 347672 sequences. (Running on oeis4.)