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 A134930 #9 Jan 19 2019 04:15:43
%S A134930 2,4,6,8,10,12,14,16,18,20,28,30,32,40,42,44,58,60,62,70,72,74,100,
%T A134930 102,104,106,108,110,136,138,140,148,150,152,178,180,182,190,192,194,
%U A134930 196,198,200,226,228,230,238,240,242,268,270,272,280,282,284
%N A134930 Nearest-neighbors of twin primes.
%C A134930 This sequence consists of the number 2 followed by the triple composites: A134928.
%H A134930 Omar E. Pol, <a href="http://www.polprimos.com">Determinacion geometrica de los numeros primos y compuesto</a>.
%F A134930 a(1)=2. For n>2, a(n)=A134928(n-1)
%e A134930 2, 4 and 6 are nearest-neighbors of twin primes because 3 and 5 are twin primes.
%t A134930 f[{a_,b_}]:={a-1,a+1,b+1}; Union[Flatten[f/@Select[Partition[Prime[ Range[ 100]],2,1], Last[#]-First[#]==2&]]] (* _Harvey P. Dale_, Aug 16 2011 *)
%K A134930 easy,nonn
%O A134930 1,1
%A A134930 _Omar E. Pol_, Nov 16 2007