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A060291
Number of twin Harshads, including overlaps, whose sum is prime and where the 2nd Harshad is <= to a consecutive power of 10 (beginning at 10^1).
+0
1
7, 8, 21, 60, 278, 1520, 9583
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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 4 08:07 EST 2009. Contains 170310 sequences.
AT&T Labs Research
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