OFFSET
1,2
LINKS
Daniel Starodubtsev, Table of n, a(n) for n = 1..10000
FORMULA
a(n) = A112405(n) - 1. - Daniel Starodubtsev, Feb 10 2020
EXAMPLE
If k=139 then (139+1)^9 - 3 = 20661046783999999997 (prime).
MATHEMATICA
Do[If[PrimeQ[(n + 1)^9 - 3], Print[n]], {n, 1, 2200}] (Steinerberger)
PROG
MAGMA) [n: n in [1..100000] | IsPrime((n+1)^9-3)]; // Vincenzo Librandi, Nov 13 2010
(PARI) is(n)=isprime((n+1)^9-3) \\ Charles R Greathouse IV, Jun 13 2017
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Parthasarathy Nambi, Jan 25 2006
EXTENSIONS
More terms from Stefan Steinerberger, Jan 27 2006
STATUS
approved