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A088057
a(1)= 7, a(n) = least prime obtained by prefixing the digits of a multiple of n to a(n-1).
+0
2
7, 47, 347, 12347, 5012347, 425012347, 7425012347, 1447425012347, 1891447425012347, 201891447425012347, 330201891447425012347, 36330201891447425012347, 24736330201891447425012347
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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 1 13:27 EST 2009. Contains 167806 sequences.
AT&T Labs Research
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