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 A175216 #14 Aug 07 2024 03:18:55
%S A175216 4,4,6,8,12,14,18,20,24,30,32,38,42,44,48,54,60,62,68,72,74,80,84,90,
%T A175216 98,102,104,108,110,114,128,132,138,140,150,152,158,164,168,174,180,
%U A175216 182,192,194,198,200,212,224,228,230,234,240,242,252,258,264,270,272
%N A175216 The first nonprimes after the primes.
%C A175216 Essentially the same as A135731, A055670, A028815 and A008864. [_R. J. Mathar_, Mar 13 2010]
%H A175216 G. C. Greubel, <a href="/A175216/b175216.txt">Table of n, a(n) for n = 1..10000</a>
%F A175216 a(1) = 4, for n >= 2, a(n) = A008864(n) = A000040(n) + 1.
%t A175216 Table[Prime[n] +1 +Boole[n==1], {n,100}] (* _G. C. Greubel_, Aug 06 2024 *)
%o A175216 (Magma) [n eq 1 select 4 else NthPrime(n) +1: n in [1..100]]; // _G. C. Greubel_, Aug 06 2024
%o A175216 (SageMath)
%o A175216 def A175216(n): return nth_prime(n) +1 +int(n==1)
%o A175216 [A175216(n) for n in range(1,101)] # _G. C. Greubel_, Aug 06 2024
%Y A175216 Cf. A000040, A008864, A028815, A055670, A135731.
%K A175216 nonn,easy
%O A175216 1,1
%A A175216 _Jaroslav Krizek_, Mar 06 2010