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 A076776 #7 Jun 07 2021 19:33:55
%S A076776 1,2,5,10,50,500,25000,12500000,312500000000,3906250000000000000,
%T A076776 1220703125000000000000000000000,
%U A076776 4768371582031250000000000000000000000000000000000
%N A076776 a(0) = 1, a(1) = 2, a(2) = 5; for n > 2, a(n) = a(n-1)*a(n-2).
%F A076776 a(n) = 2^fibonacci(n-2)*5^fibonacci(n-1)for n>=2, fibonacci(n)=A000045(n). - _Vladeta Jovovic_ and Antonio G. Astudillo (afg_astudillo(AT)hotmail.com), Nov 16 2002
%p A076776 with(combinat, fibonacci):A076776 := n->2^fibonacci(n-2)*5^fibonacci(n-1);
%t A076776 nxt[{a_,b_}]:={b,a*b}; Join[{1},NestList[nxt,{2,5},15][[All,1]]] (* _Harvey P. Dale_, Jun 07 2021 *)
%Y A076776 Cf. A000045, A000301, A010098, A010099.
%K A076776 nonn
%O A076776 0,2
%A A076776 Emily Shields (emilyshields_2001(AT)hotmail.com), Nov 14 2002
%E A076776 More terms from Antonio G. Astudillo (afg_astudillo(AT)hotmail.com), Nov 16 2002