

A173852


Primes of the form 10^n  2^n  1.


2




OFFSET

1,1


COMMENTS

The next term is too large to display here.


LINKS

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


MATHEMATICA

Select[Table[10^n2^n1, {n, 0, 100}], PrimeQ] (* Vincenzo Librandi, Jul 26 2012 *)


PROG

(MAGMA) /* The code gives only the terms up to a(5): */ [a: n in [0..200]  IsPrime(a) where a is 10^n2^n1]; // Vincenzo Librandi, Jul 26 2012


CROSSREFS

Cf. A174179.
Sequence in context: A286913 A201070 A213960 * A062841 A110718 A293142
Adjacent sequences: A173849 A173850 A173851 * A173853 A173854 A173855


KEYWORD

nonn,hard


AUTHOR

Vincenzo Librandi, Feb 26 2010


STATUS

approved



