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A102738 Numbers n such that 4*10^n - 11 is prime. 0
1, 2, 3, 4, 5, 15, 35, 61, 256, 357, 628, 767, 1064, 1096, 6608 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Numbers corresponding to terms <= 767 are certified primes. - Klaus Brockhaus, Feb 16 2005

The next term is larger than 2500. - Stefan Steinerberger, Feb 18 2006

LINKS

Table of n, a(n) for n=1..15.

MATHEMATICA

For[n=1, n<2500, n++, If[PrimeQ[4*10^n-11], Print[n]]] (* Stefan Steinerberger, Feb 18 2006 *)

PROG

(PARI) is(n)=ispseudoprime(4*10^n-11) \\ Charles R Greathouse IV, Jun 13 2017

CROSSREFS

Sequence in context: A145029 A145030 A242948 * A098553 A132705 A177334

Adjacent sequences:  A102735 A102736 A102737 * A102739 A102740 A102741

KEYWORD

more,nonn

AUTHOR

Tom Mueller (muel4503(AT)uni-trier.de), Feb 08 2005

EXTENSIONS

a(9) to a(14) from Klaus Brockhaus, Feb 16 2005

One more term from Ryan Propper, Jul 21 2006

STATUS

approved

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Last modified May 13 02:36 EDT 2021. Contains 343836 sequences. (Running on oeis4.)