A163319 Primes of the form 3^n-n^3.

2, 17, 58049, 6461081889226673298791633, 273892744995340833777347939263771534786080723598328513, 141158163862183763292171284564016760661754655311572624335224092241585052457078933432718798844633407313

Offset

1,1

Comments

Generated by the n of A109387. The number of decimal digits in this sequence grows as 1, 2, 5, 25, 54, 102, 166, 194,...

The large terms beyond a(6) are not shown.

Links

Table of n, a(n) for n=1..6.

Mathematica

f[n_]:=3^n-n^3; lst={}; Do[If[PrimeQ[f[n]], AppendTo[lst, f[n]]], {n, 4*5!}]; lst

Crossrefs

Sequence in context: A174305 A003819 A078624 * A269836 A114950 A112969

Adjacent sequences: A163316 A163317 A163318 * A163320 A163321 A163322

Keyword

nonn

Author

Vladimir Joseph Stephan Orlovsky, Jul 24 2009

Extensions

Edited by R. J. Mathar, Jul 26 2009

Status

approved