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 A025085 #11 Aug 06 2019 07:32:52
%S A025085 0,5,7,17,23,48,59,107,124,218,250,424,474,790,883,1454,1599,2617,
%T A025085 2835,4620,5017,8154,8767,14224,15134,24530,26162,42377,44824,72576,
%U A025085 77014,124663,131495,212819,222957,360811,378995,613289,640606,1036587,1086216,1757602
%N A025085 s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (Fibonacci numbers), t = A001950 (upper Wythoff sequence).
%t A025085 Table[Sum[Fibonacci[k]*Floor[(n - k + 1)*GoldenRatio^2], {k, 1, Floor[n/2]}], {n, 1, 50}] (* _Vaclav Kotesovec_, Aug 06 2019 *)
%K A025085 nonn
%O A025085 1,2
%A A025085 _Clark Kimberling_
%E A025085 a(1)=0 added by _Vaclav Kotesovec_, Aug 06 2019