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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.

A322607 Numbers that can be expressed as the ratio between the product and the sum of consecutive squarefree numbers starting from 1.

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%I A322607 #6 Dec 20 2018 23:53:32
%S A322607 1,3080,350350,61850250,17823180375,6871260396000,
%T A322607 88909822914869880000,2746644314348614680000,
%U A322607 2980109081068246927800000,9638057975990853416623724908800000,424217819372970387341691005411520000,51912228216508515627667235880347808000000,152157812632066726080765311397008321568000000
%N A322607 Numbers that can be expressed as the ratio between the product and the sum of consecutive squarefree numbers starting from 1.
%F A322607 a(n) = A111059(A322608(n+1))/A173143(A322608(n+1)).
%e A322607 1 is a term because 1/1 = (1*2*3)/(1+2+3) = 1.
%e A322607 3080 is a term because (1*2*3*5*6*7*10*11)/(1+2+3+5+6+7+10+11) = 138600/45 = 3080.
%p A322607 with(numtheory): P:=proc(q) local a,b,c,n; a:=1; b:=0; c:=[];
%p A322607 for n from 1 to q do if issqrfree(n) then a:=a*n; b:=b+n;
%p A322607 if frac(a/b)=0 then if n>1 then c:=[op(c),a/b];
%p A322607 fi; fi; fi; od; op(c); end: P(60);
%Y A322607 Cf. A005117, A111059, A116536, A141092, A173143, A322608.
%K A322607 nonn,easy
%O A322607 1,2
%A A322607 _Paolo P. Lava_, Dec 20 2018