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A092652
Number of consecutive prime runs of 6 primes congruent to 3 mod 4 below 10^n.
2
0, 0, 0, 0, 9, 140, 1354, 13190, 126026, 1190056, 11232733
OFFSET
1,5
FORMULA
Generate the prime sequence with primes labeled 1 mod 4 or 3 mod 4. Add count of primes to sequence if just 6 primes occur before interruption by a prime congruent to 1 mod 4.
EXAMPLE
a(5)=9 because 9 sets of 6 primes occur below 10^5, each run interrupted by a prime congruent to 1 mod 4.
CROSSREFS
Sequence in context: A364941 A294117 A266634 * A137051 A137059 A263966
KEYWORD
more,nonn
AUTHOR
Enoch Haga, Mar 02 2004
EXTENSIONS
a(9)-a(11) from Chai Wah Wu, Mar 18 2018
STATUS
approved