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A075599 a(1) = 7 and then the smallest prime that is obtained by placing digits on both sides of the previous term. Or smallest prime that encompasses a(n-1). 7
7, 173, 11731, 2117317, 421173173, 34211731733, 1342117317337, 813421173173377, 28134211731733771, 4281342117317337713, 142813421173173377131, 21428134211731733771317, 2214281342117317337713171, 2221428134211731733771317113, 922214281342117317337713171139 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

CROSSREFS

Cf. A075595, A075596, A075597, A075598, A075600, A075601, A075602.

Sequence in context: A113562 A157203 A178019 * A012500 A094257 A195887

Adjacent sequences:  A075596 A075597 A075598 * A075600 A075601 A075602

KEYWORD

base,nonn

AUTHOR

Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Sep 28 2002

EXTENSIONS

More terms from Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), Jan 20 2003

Further terms from Ray G. Opao (1260(AT)email.com), Nov 26 2004

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Last modified February 15 10:52 EST 2012. Contains 205763 sequences.