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 A080705 #8 Feb 17 2015 03:44:36 %S A080705 3,15,17,25,33,49,57,69,77,89,91,99,101,109,117,129,137,149,151,159, %T A080705 167,179,187,199,201,209,217,233,241,257,265,277,285,297,299,307,315, %U A080705 327,335,347,349,357,365,381,389,401,409,421,423,431,439,451,459,471,473,481,489 %N A080705 Numbers n such that A080704(n+1) - A080704(n) = 1. %C A080705 These are the integers that are the average of a pair of consecutive terms in A080704. - _Matthew Vandermast_, Mar 06 2003 %Y A080705 Cf. A080704, A064437. %K A080705 nonn,easy %O A080705 1,1 %A A080705 _Benoit Cloitre_, Mar 01 2003