|
| |
|
|
A092654
|
|
Number of consecutive prime runs of 7 primes congruent to 1 mod 4 below 10^n.
|
|
2
| | |
|
|
|
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 7 primes occur before interruption by a prime congruent to 3 mod 4.
|
|
|
EXAMPLE
| a(5)=2 because 2 sets of 7 primes occur below 10^5, each run interrupted by a prime congruent to 3 mod 4.
|
|
|
CROSSREFS
| Cf. A092655 A092656.
Sequence in context: A019579 A200158 A151583 * A100101 A090601 A071777
Adjacent sequences: A092651 A092652 A092653 * A092655 A092656 A092657
|
|
|
KEYWORD
| more,nonn
|
|
|
AUTHOR
| Enoch Haga (Enokh(AT)comcast.net), Mar 02 2004
|
| |
|
|
