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 A134205 #11 Oct 17 2017 09:28:12 %S A134205 5,8,12,20,30,36,42,64,72,60,66,48,78,126,120,144,136,126,152,180,210, %T A134205 198,322,336,150,286,378,252,406,390,248,288,264,170,210,324,666,760, %U A134205 624,480,574,630,344,528,540,506,752,720,588,750,714,468,424,594,1100,1064,684 %N A134205 a(n) = A134204(n)+A134204(n-1). %C A134205 a(n) is divisible by n for every n. %H A134205 Michael De Vlieger, <a href="/A134205/b134205.txt">Table of n, a(n) for n = 1..10000</a> %t A134205 With[{nn = 57}, Total /@ Partition[#, 2, 1] &@ Fold[Append[#1, SelectFirst[Prime@ Range[2, Ceiling& Log2[nn] nn], Function[p, And[FreeQ[#1, p], Divisible[Last@ #1 + p, #2]]]]] &, {2}, Range@ nn]] (* _Michael De Vlieger_, Oct 16 2017 *) %Y A134205 Cf. A134204, A134206. %K A134205 nonn %O A134205 1,1 %A A134205 _Leroy Quet_, Oct 14 2007 %E A134205 More terms from _Robert Israel_, Oct 14 2007