%I A067599
%S A067599 21,31,22,51,2131,71,23,32,2151,111,2231,131,2171,3151,24,171,2132,191,
%T A067599 2251,3171,21111,231,2331,52,21131,33,2271,291,213151,311,25,31111,
%U A067599 21171,5171,2232,371,21191,31131,2351,411,213171,431,22111,3251,21231
%N A067599 Decimal encoding of the prime factorization of n.
%C A067599 If n has prime factorization p_1^e_1 * ... * p_r^e_r with p_1 < ... < 
               p_r, then its decimal encoding is p_1 e_1...p_r e_r. For example, 
               15 = 3^1 * 5^1, so has decimal encoding 3151.
%e A067599 The prime factorization of 24 = 2^3 * 3^1 with corresponding encoding 
               2331. So a(24) = 2331.
%t A067599 f[n_] := FromDigits[ Flatten[ IntegerDigits[ FactorInteger[ n]]]]; Table[ 
               f[n], {n, 2, 50} ]
%Y A067599 Cf. A037276, A080670, A112375. See A068633 for another version.
%Y A067599 Sequence in context: A116116 A079394 A112375 this_sequence A123846 A031889 
               A034101
%Y A067599 Adjacent sequences: A067596 A067597 A067598 this_sequence A067600 A067601 
               A067602
%K A067599 base,easy,nonn
%O A067599 2,1
%A A067599 Joseph L. Pe (joseph_l_pe(AT)hotmail.com), Jan 31 2002
%E A067599 Edited by Robert G. Wilson v (rgwv(AT)rgwv.com), Feb 02 2002