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%I #12 Jun 15 2022 13:15:47
%S 4,2,2,2,11,211
%N Trajectory of 4 under prime factor concatenation procedure.
%H Patrick De Geest, <a href="http://www.worldofnumbers.com/topic1.htm">Home Primes</a>
%e May be regarded as the rows of an irregular triangle:
%e 4
%e 2 2
%e 2 11
%e 211. - _N. J. A. Sloane_, Jun 15 2022
%Y Cf. A037273.
%K fini,full,nonn,tabf,base
%O 0,1
%A _Jeff Burch_
%E Edited by _Charles R Greathouse IV_, Apr 30 2010
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