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Similar to A169748, but now B = 2,3,5,7,... (the primes).
Table of n, a(n) for n=1..67.
Sequence in context: A105332 A186706 A169749 * A072007 A078783 A125717
Adjacent sequences: A169747 A169748 A169749 * A169751 A169752 A169753
Rodolfo Kurchan, Apr 08 2010
Corrected and extended by D. S. McNeil, May 09 2010