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%I #9 Jul 09 2023 12:45:31
%S 0,1,2,2,1,2,3,5,4,5,5,7,2
%N Number of distinct prime factors of A008351(n).
%H Dario Alejandro Alpern, <a href="https://www.alpertron.com.ar/ECM.HTM">Factorization using the Elliptic Curve Method.</a>
%e The number of distinct prime factors of 212 is 2 which is the third term in the sequence.
%Y A008351: Concatenate a(n-1) and a(n-2) with a(1)=1 & a(2)=2.
%Y Cf. A008351.
%K hard,nonn,base
%O 1,3
%A _Parthasarathy Nambi_, Jan 23 2006
%E a(11)-a(13) from _Robert G. Wilson v_, Jan 27 2006
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