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A102703 Numbers n such that n99 is prime. 1
1, 4, 5, 13, 14, 16, 19, 20, 23, 26, 29, 32, 34, 40, 47, 49, 50, 53, 61, 62, 65, 68, 74, 76, 85, 86, 89, 91, 100, 103, 104, 107, 112, 113, 116, 127, 128, 130, 133, 134, 137, 139, 146, 151, 152, 166, 170, 172, 175, 181, 188, 196, 203, 205, 208 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

COMMENTS

Also numbers such that 100*n+99 is prime. - Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Feb 22 2006

LINKS

Chris Caldwell, The First 1,000 Primes.

FORMULA

a(n) ~ 40n log n. [Charles R Greathouse IV, Mar 18, 2011]

EXAMPLE

If n=1, then n99 = 199 (prime)

If n=40, then n99 = 4099 (prime)

If n=76, then n99 = 7699 (prime)

MATHEMATICA

Do[If[PrimeQ[100*n + 99], Print[n]], {n, 1, 200}] - Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Feb 22 2006

Select[Range[210], PrimeQ[100#+99]&]  (* From Harvey P. Dale, Mar 18 2011 *)

PROG

(PARI) select(primes(10^5), n->n%100==99)\100 \\ Charles R Greathouse IV, Mar 18, 2011

CROSSREFS

Sequence in context: A028272 A003969 A132140 * A156638 A098868 A087882

Adjacent sequences:  A102700 A102701 A102702 * A102704 A102705 A102706

KEYWORD

nonn,base,easy

AUTHOR

Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Feb 04 2005

EXTENSIONS

More terms from Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Feb 22 2006

Corrected and extended by Harvey P. Dale, Mar 18 2011.

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Last modified February 15 07:42 EST 2012. Contains 205717 sequences.