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A092647 Absolute value of difference between counts of uninterrupted runs of 4 primes in A092645 and A092646. 2
0, 0, 1, 5, 13, 34, 207, 349, 631, 1257, 2295 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

COMMENTS

Take the absolute value of the difference between counts of runs of 4 primes congruent to 1 mod 4 and 3 mod 4.

LINKS

Table of n, a(n) for n=1..11.

FORMULA

a(n) = abs(A092646(n) - A092645(n)). - Michel Marcus, Jun 03 2014

EXAMPLE

a(4)=5 because in A092645 the count is 10 and in A092646 the count is 15. 15 - 10 = 5.

CROSSREFS

Cf. A092645, A092646.

Sequence in context: A034509 A034521 A294841 * A171262 A006561 A146845

Adjacent sequences:  A092644 A092645 A092646 * A092648 A092649 A092650

KEYWORD

more,nonn

AUTHOR

Enoch Haga, Mar 02 2004

EXTENSIONS

a(9)-a(10), using A092645 and A092646, from Michel Marcus, Jun 03 2014

a(11) from Chai Wah Wu, Mar 18 2018

STATUS

approved

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Last modified October 20 06:50 EDT 2018. Contains 316378 sequences. (Running on oeis4.)