A109569 a(n) = If[Floor[2*Mod[(Prime[n + 1] - Prime[n])*PrimePi[n]/n, 8]] == 15, Prime[n]]

19609, 25471, 35617, 44293, 58831, 89689

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]] == 15, Prime[n], {}], {n, 1, 10000}]]

Crossrefs

Cf. A001359.

Sequence in context: A115472 A022234 A082890 * A204665 A031681 A118924

Adjacent sequences: A109566 A109567 A109568 * A109570 A109571 A109572

Keyword

nonn

Author

Roger L. Bagula, Jun 27 2005

Status

approved