A087573 Smallest number k such that prime(4) + k, prime(5) + k, ..., prime(n+3) + k are all prime.

4, 6, 6, 6, 90, 90

Offset

1,1

Links

Table of n, a(n) for n=1..6.

Example

a(3)=a(4)=6 as 7+6=13, 11+6=17, 13+6=19 and 17+6=23 are all prime.

Crossrefs

Cf. A087551.

Sequence in context: A298562 A298755 A035551 * A201235 A205847 A227967

Adjacent sequences: A087570 A087571 A087572 * A087574 A087575 A087576

Keyword

nonn,fini,full

Author

Amarnath Murthy, Sep 17 2003

Extensions

Edited by Don Reble, Sep 23 2003

Status

approved