A102891 Start of the first string of exactly n consecutive pairs of cousin primes.

67, 37, 7, 97, 853, 1654863667, 14865673633, 128433097567

Offset

1,1

Links

Table of n, a(n) for n=1..8.

Eric Weisstein's World of Mathematics, Cousin Primes

Example

a(5) = 853 as the consecutive primes 853, 857, 859, 863, 877, 881, 883, 887, 907 and 911 form exactly five consecutive pairs (p, p+4) of cousin primes and no smaller string of consecutive primes has this property.

Crossrefs

Cf. A087641 (similar for twin primes), A095969, A095970, A095971.

Sequence in context: A051323 A112506 A033387 * A145175 A196251 A246783

Adjacent sequences: A102888 A102889 A102890 * A102892 A102893 A102894

Keyword

more,nonn

Author

Rick L. Shepherd, Jan 16 2005

Extensions

a(6)-a(8) from Donovan Johnson, Sep 03 2008

Status

approved