A092647 Absolute value of difference between counts of uninterrupted runs of 4 primes in A092645 and A092646.

0, 0, 1, 5, 13, 34, 207, 349, 631, 1257, 2295

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