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 A073665 #5 Dec 05 2013 19:55:31 %S A073665 2,8,14,32,20,26,62,38,50,56,80,68,110,86,140,98,74,122,104,128,152, %T A073665 44,92,134,212,176,170,146,116,200,158,224,194,164,218,242,188,272, %U A073665 284,308,254,314,278,290,230,248,182,206,302,296,260,326,332,350,236,320,266 %N A073665 Rearrangement of even numbers such that a(n) + a(n+1) + 1 and a(n)*a(n+1) + 1 are primes for all n. %Y A073665 Cf. A073661, A073662, A073664. %K A073665 nonn %O A073665 1,1 %A A073665 _Amarnath Murthy_, Aug 10 2002 %E A073665 Corrected and extended by _Sascha Kurz_, Jan 28 2003