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 A072473 #23 Sep 08 2022 08:45:06
%S A072473 1,4,8,12,18,24,26,34,38,42,48,52,60,64,66,78,80,90,96,102,108,114,
%T A072473 116,134,132,138,148,156,162,168,166,180,180,198,200,208,216,220,230,
%U A072473 236,242,252,252,264,266,280,280,280,294,312,324,330,336,342,344,350,350
%N A072473 a(n) = prime(2*n) - prime(n).
%C A072473 a(n) > prime(n) for n > 1. - _Charles R Greathouse IV_, Nov 22 2013
%C A072473 Sequence is not monotonic. - _Zak Seidov_, Feb 15 2015
%H A072473 Seiichi Manyama, <a href="/A072473/b072473.txt">Table of n, a(n) for n = 1..10000</a>
%F A072473 a(n) = A066066(n) + A000040(n). - _Reinhard Zumkeller_, Jul 25 2010
%t A072473 Table[ Prime[2n] - Prime[n], {n, 1, 60}]
%o A072473 (PARI) a(n) = prime(2*n) - prime(n); \\ _Michel Marcus_, Nov 22 2013
%o A072473 (Magma) [NthPrime(2*n) - NthPrime(n): n in [1..80]]; // _Vincenzo Librandi_, Feb 16 2015
%Y A072473 Cf. A072715.
%K A072473 nonn
%O A072473 1,2
%A A072473 _Amarnath Murthy_, Jun 20 2002
%E A072473 Edited by _Robert G. Wilson v_ and _Jim Nastos_, Jun 21 2002