This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A238747 #9 May 15 2014 12:17:45
%S A238747 1,1,1,1,2,1,1,1,2,1,1,1,1,2,2,1,1,1,1,1,1,1,2,2,1,1,1,1,2,1,1,1,1,3,
%T A238747 1,1,2,2,2,2,1,2,2,1,1,1,3,1,1,1,1,1,2,1,1,1,1,1,1,2,1,1,1,1,1,2,1,1,
%U A238747 2,2,1,2,1,1,2,1,1,1,2,3,1,1,1,2,3,1,1
%N A238747 Row n of table gives prime metasignature of n: count total appearances of each distinct integer that appears in the prime signature of n, then arrange totals in nonincreasing order.
%C A238747 A prime metasignature is analogous to the signature of a partition (cf. A115621); it is the signature of a prime signature.
%C A238747 Row n also gives prime signature of A181819(n).
%F A238747 Row n is identical to row A181819(n) of table A212171.
%e A238747 The prime signature of 72 (2^3*3^2) is {3,2}. The numbers 3 and 2 each appear once; therefore, the prime metasignature of 72 is {1,1}.
%e A238747 The prime signature of 120 (2^3*3*5) is {3,1,1}. 3 appears 1 time and 1 appears 2 times; therefore, the prime metasignature of 120 is {2,1}.
%Y A238747 Length of row n equals A071625(n); sum of numbers in row n is A001221(n).
%Y A238747 Cf. A115621, A181819, A238748.
%K A238747 nonn,tabf
%O A238747 2,5
%A A238747 _Matthew Vandermast_, May 08 2014