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A103129 Least k such that 10^n + k - 1 is the first of a pair of twin primes. 0
2, 2, 20, 8, 152, 38, 140, 38, 8, 278, 818, 62, 1268, 98, 2372, 1550, 20, 620, 98, 392, 410, 650, 5528, 2732, 560, 950, 428, 602, 2798, 1682, 7190, 2450, 6752, 7598, 8420, 16880, 872, 5570, 10328, 16112, 2132, 6122, 23330, 5180, 4250, 2642, 2258, 3998 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..48.

CROSSREFS

Sequence in context: A172194 A093777 A326177 * A322898 A009340 A053593

Adjacent sequences:  A103126 A103127 A103128 * A103130 A103131 A103132

KEYWORD

nonn

AUTHOR

Pierre CAMI, Mar 17 2005

EXTENSIONS

Corrected and extended by Don Reble, Mar 18 2005

STATUS

approved

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Last modified September 16 06:21 EDT 2019. Contains 327090 sequences. (Running on oeis4.)