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Table of n, a(n) for n=1..100.
a(n) = A196563(A000040(n)). - Michel Marcus, Oct 05 2013
Number of odd digits in n-th prime gives A104638.
Sequence in context: A212648 A255507 A195052 * A188795 A058745 A275333
Adjacent sequences: A104634 A104635 A104636 * A104638 A104639 A104640
Zak Seidov, Mar 18 2005