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A097515
(Largest prime < 10^n) + (smallest prime > 10^n).
+0
1
18, 198, 2006, 19980, 199994, 1999986, 20000010, 199999996, 1999999944, 19999999986, 199999999980, 2000000000028, 20000000000008, 200000000000004, 2000000000000026, 19999999999999998, 200000000000000000
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Maintained by
N. J. A. Sloane
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njas@research.att.com
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Last modified December 11 12:57 EST 2009. Contains 170656 sequences.
AT&T Labs Research
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