A109562 a(n) = If[Floor[2*Mod[(Prime[n + 1] - Prime[n])*PrimePi[n]/n, 8]] == 8, Prime[n]]

293, 1069, 1259, 1637, 2311, 2557

Offset

0,1

Links

Table of n, a(n) for n=0..5.

Mathematica

a = Flatten[Table[If[Floor[2*Mod[(Prime[n + 1] - Prime[n])*PrimePi[n]/n, 8]] == 8, Prime[n], {}], {n, 1, 400}]]

Crossrefs

Cf. A001359.

Sequence in context: A142558 A251674 A217182 * A023305 A109182 A342874

Adjacent sequences: A109559 A109560 A109561 * A109563 A109564 A109565

Keyword

nonn

Author

Roger L. Bagula, Jun 27 2005

Status

approved