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 A280108 #16 Jan 07 2017 02:38:03
%S A280108 1,4,1,8,12,13,30,48,20,168,200,192,522,1128,384,2208,3572,4320,9350,
%T A280108 17296,6360,54208,64680,52992,186048,361928,115600,826728,1169400,
%U A280108 1377012,3010350,4876416,1980400,17256768,23639040,19906944,54018522,116538408
%N A280108 Sum of odd divisors of Lucas(n).
%H A280108 Vincenzo Librandi, <a href="/A280108/b280108.txt">Table of n, a(n) for n = 1..300</a>
%F A280108 a(n) = A000593(A000032(n)).
%t A280108 a[n_]:=Select[Divisors[LucasL[n]], OddQ]//Total;Table[a[n], {n, 1, 40}]
%Y A280108 Cf. A000032, A000593, A193495.
%K A280108 nonn
%O A280108 1,2
%A A280108 _Vincenzo Librandi_, Jan 06 2017