1,2
a(n) = A105420(A003586(n)).
Cf. A117220, A117221, A090184.
Sequence in context: A024369 A047011 A018163 this_sequence A081172 A030032 A002661
Adjacent sequences: A117219 A117220 A117221 this_sequence A117223 A117224 A117225
nonn
Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Mar 04 2006
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