A071554 Smallest x > 1 such that x^prime(n) == 1 mod(prime(i)) 2<=i<=n.

4, 16, 106, 1156, 15016, 255256, 4849846, 111546436, 3234846616, 100280245066, 3710369067406, 152125131763606, 6541380665835016, 307444891294245706, 16294579238595022366, 961380175077106319536, 58644190679703485491636

Offset

2,1

Links

Table of n, a(n) for n=2..18.

Formula

a(n)=(1/2)*(A006862(n)+1)

Crossrefs

Sequence in context: A009630 A318695 A131043 * A212313 A332752 A356130

Adjacent sequences: A071551 A071552 A071553 * A071555 A071556 A071557

Keyword

easy,nonn

Author

Benoit Cloitre, May 30 2002

Status

approved