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 A169606 #16 Oct 25 2020 16:16:29
%S A169606 2,3,4,5,8,9,10,11,14,15,16,17,20,21,26,27,28,29,34,35,38,39,40,41,44,
%T A169606 45,50,51,56,57,58,59,64,65,68,69,70,71,76,77,80,81,86,87,94,95,98,99,
%U A169606 100,101,104,105,106,107,110,111,124,125,128,129,134,135,136,137,146
%N A169606 a(2n-1) = prime(n+2)-3, a(2n) = prime(n+2)-2.
%H A169606 Harvey P. Dale, <a href="/A169606/b169606.txt">Table of n, a(n) for n = 1..1000</a>
%F A169606 a(n) ~ 0.5 n log n. - _Charles R Greathouse IV_, May 25 2011
%e A169606 a(1)=5-3=2; a(2)=5-2=3; a(3)=7-3=4.
%t A169606 Table[If[OddQ[n],Prime[(n+1)/2+2]-3,Prime[n/2+2]-2],{n,70}] (* _Harvey P. Dale_, Oct 25 2020 *)
%o A169606 (PARI) forprime(p=5,97,print1(p-3", "p-2", ")) \\ _Charles R Greathouse IV_, May 25 2011
%Y A169606 Cf. A047247, A000040.
%K A169606 nonn,easy
%O A169606 1,1
%A A169606 _Juri-Stepan Gerasimov_, Dec 03 2009
%E A169606 Entries checked by _R. J. Mathar_, Apr 14 2010
%E A169606 Definition reworded by _N. J. A. Sloane_, Aug 24 2012