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 A319161 #8 Sep 15 2018 15:47:21 %S A319161 1,2,3,4,5,7,8,9,11,12,13,16,17,18,19,20,23,24,25,27,28,29,31,32,37, %T A319161 40,41,43,44,45,47,48,49,50,52,53,54,56,59,60,61,63,64,67,68,71,72,73, %U A319161 75,76,79,80,81,83,84,88,89,90,92,96,97,98,99,101,103,104 %N A319161 Numbers whose prime multiplicities appear with relatively prime multiplicities. %C A319161 Numbers n such that A181819(n) is not a perfect power (i.e. belongs to A007916). %e A319161 The sequence of integer partitions whose Heinz numbers are in the sequence begins: (), (1), (2), (11), (3), (4), (111), (22), (5), (211), (6), (1111), (7), (221), (8), (311), (9), (2111), (33), (222), (411). %t A319161 Select[Range[100],GCD@@Length/@Split[Sort[FactorInteger[#][[All,2]]]]==1&] %Y A319161 Cf. A001597, A007916, A056239, A072774, A181819, A182850, A289509, A296150, A298748, A305732, A319151, A319160, A319163, A319165. %K A319161 nonn %O A319161 1,2 %A A319161 _Gus Wiseman_, Sep 12 2018