A277693 Smallest k such that (k+i)*prime(n)#-1 is prime for i = 0, 1, 2, ..., n+1, n+2 where prime(n)# is the n-th primorial, n>1.

1, 12, 33277, 4177, 278, 3680912

Offset

2,2

Links

Table of n, a(n) for n=2..7.

Pierre CAMI, PFGW Script

Crossrefs

Cf. A002110, A277691.

Sequence in context: A308139 A220791 A146519 * A049504 A308374 A134714

Adjacent sequences: A277690 A277691 A277692 * A277694 A277695 A277696

Keyword

nonn,hard,more

Author

Pierre CAMI, Nov 11 2016

Status

approved