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 A259605 #4 Jun 30 2015 17:15:15 %S A259605 2,5,6,7,10,13,14,15,19,22,21,22,26,29,30,31,34,37,38,39,42,46,47,46, %T A259605 51,53,55,58,55,57,62,65,66,67,70,73,74,77,79,78,82,86,85,86,91,94,93, %U A259605 94,101,102,101,102,105,110,109,110,114,118,119,118,122,127 %N A259605 (A259565(n) + A259565(n+1)) / 2. %C A259605 All terms are squarefree by definition of A259565. %H A259605 Reinhard Zumkeller, <a href="/A259605/b259605.txt">Table of n, a(n) for n = 1..10000</a> %o A259605 (Haskell) %o A259605 a259605 n = a259605_list !! (n-1) %o A259605 a259605_list = zipWith ((flip div 2 .) . (+)) %o A259605 a259565_list $ tail a259565_list %Y A259605 Cf. A259565, A005117, A086517, A259602, A259603, A259604. %K A259605 nonn %O A259605 1,1 %A A259605 _Reinhard Zumkeller_, Jun 30 2015