

A088684


Prime(3n+3)prime(3n+1).


5



6, 6, 8, 6, 8, 6, 10, 6, 6, 10, 12, 10, 8, 6, 24, 6, 12, 12, 10, 24, 6, 16, 10, 12, 14, 18, 12, 10, 6, 20, 12, 14, 16, 8, 16, 8, 6, 12, 12, 16, 18, 18, 10, 10, 18, 14, 6, 24, 6, 6, 24, 18, 12, 10, 14, 10, 12, 12, 8, 6, 12, 12, 12, 16, 20, 12, 18, 20, 8, 6, 14, 40, 26, 18, 10, 6, 22, 6
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OFFSET

1,1


COMMENTS

Minimal difference is 6 (for 3tuplet). Repeating 6 means successive 3tuplets.


LINKS

Robert Israel, Table of n, a(n) for n = 1..10000


FORMULA

Partition primes in triples starting with 7: {7, 11, 13}, {17, 19, 23}, {29, 31, 37}, {41, 43, 47}, {53, 59, 61}, {67, 71, 73}, {79, 83, 89}, {97, 101, 103}, {107, 109, 113}. Sequence gives differences between lesser and larger primes in triples.


MAPLE

Primes:= select(isprime, [2, seq(i, i=3..10000)]):
seq(Primes[3*n+3]Primes[3*n+1], n=1..(nops(Primes)3)/3); # Robert Israel, Dec 15 2019


MATHEMATICA

Last[#]First[#]&/@Partition[Prime[Range[4, 250]], 3] (* Harvey P. Dale, Sep 06 2011 *)


CROSSREFS

Cf. A088680, A078584, A088682, A088683.
Sequence in context: A132711 A021861 A334365 * A088683 A201578 A322292
Adjacent sequences: A088681 A088682 A088683 * A088685 A088686 A088687


KEYWORD

base,easy,nonn


AUTHOR

Zak Seidov, Oct 05 2003


STATUS

approved



