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 A115043 #4 Mar 30 2012 18:40:02 %S A115043 3,5,15,3,45,15,675,45,30375,675,20503125,30375,622782421875,20503125, %T A115043 12768985843505859375,622782421875,7952299928506168842315673828125, %U A115043 12768985843505859375 %N A115043 a(0)=3, a(1)=5. a(n) = a(n-1)*a(n-2) if n odd, else a(n) = a(n-1)/a(n-2). %C A115043 All divisors >1 of the terms are also in the sequence. %F A115043 a(n) = a(n-2)*a(n-4) if n odd. a(n)=a(n-3) if n even. %F A115043 a(2n+1) = 3^Fibonacci(n+1) * 5^Fibonacci(n). %F A115043 a(2n) = 3^Fibonacci(n-1) * 5^Fibonacci(n-2). %Y A115043 Cf. A115033, A115034, A174348. %K A115043 easy,nonn %O A115043 0,1 %A A115043 _Giovanni Teofilatto_, Feb 28 2006 %E A115043 Formulas corrected by _R. J. Mathar_, Mar 16 2010