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 A187043 #10 Jun 02 2025 03:57:32 %S A187043 2,3,3,5,6,7,7,7,8,9,8,9,9,10,10,11,11,12,13,12,13,14,14,15,16,17,18, %T A187043 19,19,19,20,21,21,23,22,23 %N A187043 Number of factors in expansion of infinitary perfect numbers (A007357) over distinct terms of A050376. %C A187043 All terms beyond a(17) should be regarded conjectural, because they reach beyond the known terms in A007357. - R. J. Mathar, Mar 30 2011 %F A187043 a(n) = A064547(A007357(n)). - R. J. Mathar, Mar 30 2011 %e A187043 Consider A007357(3)=90. It is a unique product 2*5*9 of distinct terms of A050376. Thus a(3)=3. %Y A187043 Cf. A050376, A007357 %K A187043 nonn %O A187043 1,1 %A A187043 _Vladimir Shevelev_, Mar 02 2011