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A092644 Absolute value of difference between counts of uninterrupted runs of 3 primes in A092642 and A092643. 3
0, 0, 3, 2, 18, 30, 8, 943, 2680, 483, 10001 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

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

FORMULA

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

EXAMPLE

a(3)=3 because in A092642 the count is 4 and in A092643 the count is 1. 4 - 1 = 3.

CROSSREFS

Cf. A092642, A092643.

Sequence in context: A173795 A249769 A026345 * A006281 A157705 A185447

Adjacent sequences:  A092641 A092642 A092643 * A092645 A092646 A092647

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 June 18 11:14 EDT 2018. Contains 305554 sequences. (Running on oeis4.)