A122601 a(n)=(n-th prime +1) modulo 7.

3, 4, 6, 1, 5, 0, 4, 6, 3, 2, 4, 3, 0, 2, 6, 5, 4, 6, 5, 2, 4, 3, 0, 6, 0, 4, 6, 3, 5, 2, 2, 6, 5, 0, 3, 5, 4, 3, 0, 6, 5, 0, 3, 5, 2, 4, 2, 0, 4, 6, 3, 2, 4, 0, 6, 5, 4, 6, 5, 2, 4, 0, 0, 4, 6, 3, 3, 2, 5, 0, 4, 3, 4, 3, 2, 6, 5, 6, 3, 4, 0, 2, 5, 0, 6, 3, 2, 3, 0, 2, 6, 4, 5, 2, 3, 0, 6, 4, 6, 3, 2, 5, 4, 3, 5

Offset

1,1

Comments

a(n)=1 only for n=4; frequences f(m) of other values are almost equal, e.g., for n=1..1000, f(m=0..6): 166,1,165,166,168,164,170.

Links

Table of n, a(n) for n=1..105.

Formula

a(n)= (A039705(n)+1) mod 7

Mathematica

Table[Mod[(Prime[n]+1), 7], {n, 1000}]

Crossrefs

Cf. A039705.

Sequence in context: A021293 A275979 A246859 * A125776 A066977 A007551

Adjacent sequences: A122598 A122599 A122600 * A122602 A122603 A122604

Keyword

nonn

Author

Zak Seidov, Sep 24 2006

Status

approved