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A098418 Number of prime triples (p,q,r) with p<q<r=p+6, containing the n-th prime. 5
0, 0, 1, 2, 3, 3, 3, 2, 1, 0, 0, 1, 2, 2, 1, 0, 0, 0, 1, 1, 1, 0, 0, 0, 1, 2, 3, 3, 2, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 2, 1, 0, 1, 2, 2, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 1, 2, 2, 1, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 2, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

COMMENTS

0 <= a(n) <= 3;

a(A098419(n))=0; a(A098420(n))>0; a(A098421(n))=1; a(A098422(n))=2; a(A098423(n))=3.

LINKS

Table of n, a(n) for n=1..105.

Eric Weisstein's World of Mathematics, Prime Triplet

EXAMPLE

A000040(13)=41: A007529(7)=41, A098414(6)=41 and

A098415(k)<>41 for all k, therefore a(13)=2.

CROSSREFS

Cf. A007529, A098414, A098415.

Sequence in context: A062745 A140733 A143605 * A128080 A062187 A031283

Adjacent sequences:  A098415 A098416 A098417 * A098419 A098420 A098421

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Sep 07 2004

STATUS

approved

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Last modified November 21 01:33 EST 2019. Contains 329349 sequences. (Running on oeis4.)