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 A249683 #8 May 28 2021 13:42:30 %S A249683 1,2,4,3,5,8,7,11,6,9,10,13,14,16,19,17,22,20,12,15,18,23,26,28,25,29, %T A249683 31,32,34,37,24,21,27,30,35,38,41,43,40,44,46,47,49,50,52,33,36,39,42, %U A249683 48,45,53,56,55,58,59,61,62,64,67,68,71,65,70,73,76,51 %N A249683 a(n) = A084937(3n+2)/2. %H A249683 Reinhard Zumkeller, <a href="/A249683/b249683.txt">Table of n, a(n) for n = 0..10000</a> %o A249683 (Haskell) %o A249683 a249683 = flip div 2 . a249681 -- _Reinhard Zumkeller_, Nov 04 2014 %Y A249683 Cf. A084937, A249680-A249682. %K A249683 nonn %O A249683 0,2 %A A249683 _N. J. A. Sloane_, Nov 03 2014