A153096 Table T(n,3) read by rows: T(n,1)*T(n,2)^n*(T(n,2)^n-1)+T(n,3) is the smallest possible prime with 1<T(n,2)<10 and T(n,3)=-1 or +1.

1, 2, 1, 1, 2, -1, 1, 3, -1, 1, 2, -1, 1, 2, -1, 1, 3, -1, 1, 3, -1, 1, 5, 1, 1, 2, -1, 1, 2, -1, 4, 2, -1, 1, 3, 1, 2, 8, 1, 1, 7, -1, 1, 5, -1, 1, 4, 1, 4, 2, -1, 1, 2, -1, 1, 4, -1, 1, 3, -1, 3, 6, -1

Offset

1,2

Links

Table of n, a(n) for n=1..63.

Pierre CAMI, The first 1000 rows of the table

Example

1*2^1*(2^1-1)+1=3 prime so A(n,1)=1,A(n,2)=2,A(n,3)=1

Crossrefs

A152414, A153090, A153091, A153092, A153093, A153094, A153095

Sequence in context: A213852 A051064 A280509 * A343407 A359236 A320010

Adjacent sequences: A153093 A153094 A153095 * A153097 A153098 A153099

Keyword

tabf,sign

Author

Pierre CAMI, Dec 18 2008

Status

approved