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A092641 Absolute value of difference between counts of uninterrupted runs of 2 primes in A092639 and A092640. 3
0, 3, 6, 15, 29, 117, 500, 1136, 4475, 3065, 8440 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

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

FORMULA

Take the absolute value of the difference between counts of runs of 2 primes congruent to 1 mod 4 and 3 mod 4.

EXAMPLE

a(2)=3 because in A092639 the count is 2 and in A092640 the count is 5. 5 - 3 = 2.

CROSSREFS

Cf. A092639, A092640.

Sequence in context: A000220 A244705 A319643 * A077449 A152232 A183038

Adjacent sequences:  A092638 A092639 A092640 * A092642 A092643 A092644

KEYWORD

more,nonn

AUTHOR

Enoch Haga, Mar 02 2004

EXTENSIONS

a(9)-a(11) from Chai Wah Wu, Mar 18 2018

STATUS

approved

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Last modified November 12 19:41 EST 2019. Contains 329078 sequences. (Running on oeis4.)