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A113034 Beginning with 7, primes of the form: least multiple of the previous term followed by a 9. Beginning with 7, a(n) is the least prime of the form k*a(n-1)*10 +9. 1
7, 79, 3169, 31699, 1584959, 110947139, 8875771129, 88757711299, 30177621841669, 10260391426167469, 718227399831722839, 222650493947834080099, 122457771671308744054459, 9796621733704699524356729, 6563736561582148681319008439, 3019318818327788393406743881949 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Harvey P. Dale, Table of n, a(n) for n = 1..100

MATHEMATICA

lm9[n_]:=Module[{k=1}, While[!PrimeQ[10*k*n+9], k++]; 10*k*n+9]; NestList[ lm9, 7, 15] (* Harvey P. Dale, Jan 16 2015 *)

CROSSREFS

Sequence in context: A098105 A201301 A159524 * A267798 A201704 A052385

Adjacent sequences:  A113031 A113032 A113033 * A113035 A113036 A113037

KEYWORD

base,nonn

AUTHOR

Amarnath Murthy, Jan 03 2006

EXTENSIONS

More terms from Joshua Zucker, Jan 11 2006

Corrected by T. D. Noe and Don Reble, Nov 15 2006

More terms from Harvey P. Dale, Jan 16 2015

STATUS

approved

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Last modified November 21 09:48 EST 2018. Contains 317446 sequences. (Running on oeis4.)