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 A057861 #2 Mar 30 2012 18:51:28 %S A057861 2,4,4,5,6,8,9,12,15,18,23,28,35,43,53,66,82,101,125,155,191,236,292, %T A057861 361,447,552,683,844,1044,1290,1595,1971,2437,3012,3723,4602,5689, %U A057861 7032,8692,10744,13280,16415,20291,25081,31002,38320,47366,58548,72370 %N A057861 floor[2^n/Fibonacci(n)]. %C A057861 Growth of a(n) is roughly 4/(1+sqrt(5)) or about 1.236... %F A057861 a(n) = [A000079(n)/A000045(n)] = (A000079(n) - A057862(n))/A000045(n) %K A057861 nonn %O A057861 1,1 %A A057861 _Henry Bottomley_, Sep 08 2000