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 A092640 Number of consecutive prime runs of 2 primes congruent to 3 mod 4 below 10^n. 5
 0, 5, 20, 101, 751, 5949, 49010, 418366 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS FORMULA Generate the prime sequence with primes labeled 1 mod 4 or 3 mod 4. Add count of primes to sequence if just 2 primes occur before interruption by a prime congruent to 1 mod 4. EXAMPLE a(4)=101 because 101 pairs of primes occur below 10^4, each run interrupted by a prime congruent to 1 mod 4. CROSSREFS Cf. A092640 A092641. Sequence in context: A026118 A108509 A110595 * A165961 A109500 A137961 Adjacent sequences:  A092637 A092638 A092639 * A092641 A092642 A092643 KEYWORD more,nonn AUTHOR Enoch Haga, Mar 02 2004 STATUS approved

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